{"title":"Bulk Mushroom Growing Supplies","description":"","products":[{"product_id":"bulk-all-in-one-mushroom-grow-kit","title":"Bulk MushBag™ All-In-One Mushroom Grow Kit","description":"\u003ch1\u003eBulk MushBag™ All-In-One Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your mushroom production with lab-prepped millet, milo grain \u0026amp; CVG substrate blend that’s ready to inoculate. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach MushBag™ all-in-one grow kit is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose between 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready MushBag™ All-In-One Mushroom Grow Kit\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet, milo grain \u0026amp; CVG substrate blend, optimally hydrated and sealed in an injection-port bag - designed as a fast, contamination-resistant foundation for mushroom production.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/mushbag-all-in-one-mushroom-grow-kit-cvg\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast colonisation\u003c\/strong\u003e - Our millet + milo grain blend provides loads of growth points, so mycelium can establish fast on grain and then move efficiently into the CVG substrate - no extra mixing or transfers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and bulk substrate are hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-healing injection ports\u003c\/strong\u003e - Make inoculation straightforward, whether you’re using spores or liquid culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet, milo grain \u0026amp; CVG substrate blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile all‑in‑one grow bag line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain + CVG substrate blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine inoculation runs with consistent, clean all-in-one grain + CVG substrate blend\u003c\/li\u003e\n\u003cli\u003eAll-in-one workflows (inoculate → colonise → fruit in-bag)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSimplified mushroom growing with fewer handling steps\u003c\/li\u003e\n\u003cli\u003eFast take off with repeatable results in a single ready to inoculate bag\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg of our proprietary millet, milo grain and CVG substrate bag (per unit)\u003c\/li\u003e\n\u003cli\u003eHumid Fruiting Tent\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003eSterility Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down the injection area on the bag.\u003c\/li\u003e\n\u003cli\u003eInject your liquid culture through the self healing injection port. Use sterile technique and keep the needle and port clean.\u003c\/li\u003e\n\u003cli\u003eAllow the substrate to colonise. Once at around 30% mycelium coverage, mix the bag fully.\u003c\/li\u003e\n\u003cli\u003eAfter full colonisation, fruit either directly from the bag, in a fruiting chamber or in the fruiting tent provided.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain and substrate are soaked\/cooked, optimally hydrated, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.491px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003cth style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.447%; height: 19.6065px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003eBulk MushBag™ All-In-One Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.213px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 39.213px;\"\u003e\u003cstrong\u003eGrain \u0026amp; substrate blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 39.213px;\"\u003eMillet + milo + CVG substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003eOptimally hydrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eInoculation guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003e~5ml spore or culture solution via injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.213px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 39.213px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 39.213px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.213px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 39.213px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 39.213px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6065px;\"\u003e\n\u003ctd style=\"width: 24.6959%; height: 19.6065px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.447%; height: 19.6065px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain + CVG Substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain \u0026amp; substrate prep slow you down. Ensure your supply chain with the UK's most reliable bulk MushBag™ mushroom grow kit.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56821085339992,"sku":null,"price":294.9,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56821085372760,"sku":null,"price":547.8,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56821085405528,"sku":null,"price":987.6,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56821085438296,"sku":null,"price":2235.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56821085471064,"sku":null,"price":3996.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56821085503832,"sku":null,"price":6912.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkAll-In-OneMushroomGrowKit1.5kg.png?v=1764947988"},{"product_id":"bulk-monotub-mushroom-grow-kit","title":"Bulk MushPro™ MonoTub Mushroom Grow Kit","description":"\u003ch1\u003eBulk MushPro™ MonoTub Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your grows with a complete MushPro™ MonoTub mushroom grow kit built for clean runs, consistent colonisation, and reliable, repeatable results. Everything is dialled-in to take you from inoculation to bulk with less guesswork and fewer setbacks.\u003c\/p\u003e\n\u003cp\u003eEach Monotub Grow Kit includes a lab-prepped grain bag, CVG bulk substrate, and a purpose-ready monotub container - so you can focus on growing, not troubleshooting prep. Prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, it’s made for growers who care about clean outcomes and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eChoose between 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready MushPro™ MonoTub Mushroom Grow Kit\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling monotub setup: a sterilised grain bag paired with CVG bulk substrate and a purpose-ready monotub container - optimally hydrated, clean-prepped, and designed as a fast, contamination-resistant foundation for consistent mushroom production.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/mushpro-monotub-mushroom-grow-kit\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast colonisation\u003c\/strong\u003e - Our sterilised grain bag gives mycelium loads of growth points to establish quickly, then it can transfer efficiently into the CVG bulk substrate inside the monotub. The kit is built for a smooth spawn-to-bulk workflow with fewer variables, so you get faster, more consistent colonisation without piecing together separate components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and bulk substrate are hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-healing injection ports\u003c\/strong\u003e - Make inoculation straightforward, whether you’re using spores or liquid culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet, milo grain \u0026amp; CVG substrate blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile monotub grow kit line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain + CVG substrate blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine inoculation runs with consistent, clean all-in-one grain + CVG substrate blend\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA complete monotub setup with fewer sourcing and prep steps\u003c\/li\u003e\n\u003cli\u003eFast takeoff on sterilised grain, then an easy spawn-to-bulk transfer into CVG for even, reliable colonisation\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Sterilised Millet Mushroom Grain Spawn Bag\u003c\/li\u003e\n\u003cli\u003e2kg Sterilised CVG Mushroom Substrate Bag\u003c\/li\u003e\n\u003cli\u003eRegular Martian MonoTub (38cm (L) x 26cm (W) x 20cm (H))\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003eSterility Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace, hands, and tools. Wipe down the injection area on the grain bag with isopropyl alcohol.\u003c\/li\u003e\n\u003cli\u003eInject your liquid culture through the self healing injection port. Use sterile technique and keep the needle and port clean.\u003c\/li\u003e\n\u003cli\u003eAllow the grain to colonise. Once at around 30% mycelium coverage, break up and shake the grain to redistribute growth for faster, more even colonisation.\u003c\/li\u003e\n\u003cli\u003ePrep the monotub for spawning to bulk. Clean the tub and your work area again, then open your CVG bulk substrate and fully colonised grain bag.\u003c\/li\u003e\n\u003cli\u003eSpawn to bulk in the monotub. Break up the fully colonised grain and mix it evenly with the CVG bulk substrate directly in the tub. Level the surface and lightly compress for an even, consistent substrate bed.\u003c\/li\u003e\n\u003cli\u003eClose the monotub and give it time to colonise. Once the surface shows consistent, even mycelium coverage, you’re ready for the next step.\u003c\/li\u003e\n\u003cli\u003eOnce fully colonised, introduce fruiting conditions (fresh air exchange + humidity management). Maintain surface conditions, then harvest when ready.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain and substrate are soaked\/cooked, optimally hydrated, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk MushPro™ MonoTub Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrain \u0026amp; substrate blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet + milo + CVG substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRegular \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptimally hydrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInoculation guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~5ml spore or culture solution via injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain + CVG Substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain \u0026amp; substrate prep slow you down. Ensure your supply chain with the UK's most reliable bulk MushBag™ mushroom grow kit.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56343241032024,"sku":null,"price":735.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56343241064792,"sku":null,"price":1396.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56343241097560,"sku":null,"price":2652.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56343241130328,"sku":null,"price":6180.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56343241163096,"sku":null,"price":11460.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56343241195864,"sku":null,"price":20680.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Monotub_Mushroom_Grow_Kit_Regular.png?v=1764951833"},{"product_id":"bulk-lions-mane-mushroom-grow-kit","title":"Bulk Lion's Mane Mushroom Grow Kit","description":"\u003ch1\u003eBulk Lion's Mane Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Lion’s Mane mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit Lion’s Mane (\u003cem\u003eHericium erinaceus\u003c\/em\u003e) fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality Lion’s Mane mushrooms.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Lion's Mane Mushroom Grow Kits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg Lion’s Mane fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh Lion’s Mane across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Lion’s Mane grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/lions-mane-mushroom-grow-kit\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Lion’s Mane develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit Lion’s Mane Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Lion’s Mane grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Lion’s Mane grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Lion’s Mane with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go Lion’s Mane grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised Lion's Mane mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the Lion’s Mane to form\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eLion’s Mane will begin forming from the cut. Continue misting daily. Harvest when the fruit is full, firm, and white (before noticeable yellowing or browning). Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk Lion's Mane Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Lion’s Mane grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56343323803992,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56343323836760,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56343323869528,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56343323902296,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56343323935064,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56343323967832,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Lion_s_Mane_Mushroom_Grow_Kit.png?v=1772028375"},{"product_id":"bulk-sterilised-millet-mushroom-grain-spawn-bag","title":"Bulk Sterilised Millet Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Sterilised Millet Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your spawn production with lab-prepped millet \u0026amp; milo grain that’s ready to inoculate. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach bulk grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose between 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Sterilised Grain Blend\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and sealed in an injection-port bag - designed as a fast, contamination-resistant foundation for grain spawn production.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/sterilised-millet-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid colonisation\u003c\/strong\u003e - Smaller millet grains mean mycelium finds more spots to grow, letting it cover the substrate faster than larger grains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-healing injection ports\u003c\/strong\u003e - Make inoculation straightforward, whether you’re using spores or liquid culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile grain line with repeatable quality\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine inoculation runs with consistent, clean grain\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning to bulk with CVG-style substrates for tub grows\u003c\/li\u003e\n\u003cli\u003eWood-based fruiting blocks when paired with hardwood substrate mixes\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg sterilised millet \u0026amp; milo grain bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the injection area on the bag.\u003c\/li\u003e\n\u003cli\u003eInject your spores or culture through the self-healing port.\u003c\/li\u003e\n\u003cli\u003eIncubate until colonised (often 3–4 weeks, depending on culture and conditions).\u003c\/li\u003e\n\u003cli\u003eSpawn to bulk:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor monotub grows: 2:1 CVG bulk substrate : spawn\u003c\/li\u003e\n\u003cli\u003eFor gourmet mushrooms on wood substrate: 6:1 wood substrate : spawn\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk Sterilised Millet Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInoculation guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~5ml spore or culture solution via injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56356925276504,"sku":null,"price":226.75,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56356925309272,"sku":null,"price":414.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56356925342040,"sku":null,"price":751.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56356925374808,"sku":null,"price":1682.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56356925407576,"sku":null,"price":2915.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56356925440344,"sku":null,"price":5180.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkSterilisedMilletMushroomGrainSpawnBag1.5kg.png?v=1765210123"},{"product_id":"bulk-sterilised-cvg-mushroom-substrate-bag","title":"Bulk Sterilised CVG Mushroom Substrate Bag","description":"\u003ch1\u003eBulk Sterilised CVG Mushroom Substrate Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your spawn production with lab-prepped coco coir, vermiculite and gypsum substrate that’s ready to mix with grain spawn. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach CVG substrate bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose between 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Sterilised CVG Blend\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOur sterilised CVG substrate is a ready-to-use bulk fruiting substrate designed for high-throughput cultivation and trade resale. Each bag is produced under controlled processes to prioritise sterility, consistency, and supply reliability.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile CVG substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/sterilised-cvg-mushroom-substrate-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh water-holding capacity\u003c\/strong\u003e - CVG acts like a moisture reservoir, supporting fuller flushes and reducing the need to over-mist or fight drying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - CVG is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated coco coir, vermiculite and gypsum blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile CVG substrate line with repeatable quality\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven CVG substrate blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine spawn-to-bulk runs with clean, fully colonised grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning to bulk in tubs using CVG bulk substrate\u003c\/li\u003e\n\u003cli\u003eDialing in consistent surface conditions (hydration + airflow) to support strong, even colonisation and pinning\u003c\/li\u003e\n\u003cli\u003eRepeatable grow cycles when you want predictable bulk-run timing (varies by culture, spawn ratio, and environment)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2kg sterilised CVG substrate bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and clean your tub\/tray.\u003c\/li\u003e\n\u003cli\u003eBreak up your fully colonised grain spawn in its bag\/jar so it mixes evenly.\u003c\/li\u003e\n\u003cli\u003eMix spawn with CVG bulk substrate in your tub\/tray until evenly distributed.\u003c\/li\u003e\n\u003cli\u003eLevel and lightly compress the surface to create a uniform top layer.\u003c\/li\u003e\n\u003cli\u003eIncubate until the bulk is fully colonised.\u003c\/li\u003e\n\u003cli\u003eIntroduce fruiting conditions once fully colonised (fresh air + surface humidity balance).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: CVG substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk Sterilised CVG Mushroom Substrate Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCVG blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoco coir, vermiculite, gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMix with colonised grain spawn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Coco Coir, Vermiculite and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let substrate prep slow you down. Ensure your supply chain with the UK's most reliable CVG bulk substrate.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56356947099992,"sku":null,"price":283.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56356947132760,"sku":null,"price":540.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56356947165528,"sku":null,"price":986.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56356947198296,"sku":null,"price":2242.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56356947231064,"sku":null,"price":3955.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56356947263832,"sku":null,"price":6950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkSterilisedCVGMushroomSubstrateBag2kg.png?v=1765210762"},{"product_id":"bulk-lions-mane-mushroom-fruiting-block","title":"Bulk Lion's Mane Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Lion's Mane Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Lion’s Mane yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Lion’s Mane (\u003cem\u003eHericium erinaceus\u003c\/em\u003e) fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Lion's Mane Fruiting Blocks\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Lion’s Mane fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Lion’s Mane across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Lion’s Mane fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003eScale whenever you’re ready - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Lion’s Mane develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Lion’s Mane Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Lion’s Mane blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Lion’s Mane blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Lion’s Mane with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Lion's Mane fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want Lion’s Mane to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruit is full and white (before significant yellowing)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Lion's Mane Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 71.3645%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Lion’s Mane blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56357040226648,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56357040259416,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56357040292184,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56357040324952,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56357040357720,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56357040390488,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkLion_sManeMushroomFruitingBlock.png?v=1765212651"},{"product_id":"bulk-lions-mane-mushroom-grain-spawn-bag","title":"Bulk Lion's Mane Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Lion’s Mane Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Lion’s Mane grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Lion’s Mane grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Lion’s Mane Grain Spawn\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and and fully colonised with vigorous Lion’s Mane mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/lions-mane-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003eScale whenever you’re ready - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Lion’s Mane grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Lion’s Mane spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Lion’s Mane grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Lion’s Mane grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHow It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Lion’s Mane grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Lion’s Mane performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003e\u003cstrong\u003eQuality Guarantee\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Lion’s Mane Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eMartian Mushrooms vs. Competitors\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Lion’s Mane mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56357067358552,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56357067391320,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56357067424088,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56357067456856,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56357067489624,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56357067522392,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkLion_sManeMushroomGrainSpawnBag.png?v=1765212880"},{"product_id":"bulk-king-oyster-mushroom-fruiting-block","title":"Bulk King Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk King Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable King Oyster mushroom yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit King Oyster \u003cspan\u003e(\u003c\/span\u003e\u003cem\u003ePleurotus eryngii\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready King Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg King Oyster fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh King Oyster across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing King Oyster fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see King Oyster mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit King Oyster Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit King Oyster blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit King Oyster blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting King Oyster mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised King Oyster fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut the top off the bag just below the seal, opening it up to the air.  \u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruit is full and white (before significant yellowing)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 293.907px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 74.2355%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003eBulk LKing Oyster Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 39.1875px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 39.1875px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.9073%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.2355%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit King Oyster blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746034921816,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746034954584,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746034987352,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746035020120,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746035052888,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746035085656,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkKingOysterMushroomFruitingBlock.png?v=1771514275"},{"product_id":"bulk-shiitake-mushroom-fruiting-block","title":"Bulk Shiitake Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Shiitake Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable \u003cspan\u003eShiitake mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit \u003cspan\u003eShiitake (\u003c\/span\u003e\u003cem\u003eLentinula edodes\u003c\/em\u003e\u003cspan\u003e) \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Shiitake Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg \u003cspan\u003eShiitake \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh \u003cspan\u003eShiitake mushrooms\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing \u003cspan\u003eShiitake\u003c\/span\u003e fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see \u003cspan\u003eShiitake mushrooms\u003c\/span\u003e develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit \u003cspan\u003eShiitake\u003c\/span\u003e Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit \u003cspan\u003eShiitake\u003c\/span\u003e blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Shiitake blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting \u003cspan\u003eShiitake mushrooms\u003c\/span\u003e with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised \u003cspan\u003eShiitake\u003c\/span\u003e fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW74056964 BCX0\"\u003e\n\u003col\u003e\n\u003cli class=\"Paragraph SCXW74056964 BCX0\"\u003e\n\u003cstrong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eMature the Block: \u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eLet the block turn brown before fruiting. \u003c\/span\u003e\u003c\/span\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eIf your Shiitake block is still mostly white, give it time to “brown” and form a firm outer skin. This browning phase helps set the block up for stronger, more reliable flushes.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW74056964 BCX0\"\u003e\n\u003cstrong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003ePrepare\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003et\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003ehe Block:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eRemove the entire block from\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003ethe bag and soak it in\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003ecold water\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e\u003cspan\u003e \u003c\/span\u003efor 4-8 hours to rehydrate. Place something heavy on the block to keep it submerged.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW74056964 BCX0\" data-ccp-props=\"{}\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW74056964 BCX0\"\u003e\n\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e\u003cstrong\u003eMaintain Humidity:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eMaintain\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e a humid environment by misting the block two or three times daily or using a humidity tent. \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eAfter soaking, pinning can occur within 7-14 days, but this \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003edepends on the environmental factors. Once pins form, reduce misting to avoid soggy caps and focus on fresh air exchange for healthy mushroom growth.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW74056964 BCX0\"\u003e\n\u003cstrong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eHumidity-Controlled Chamber:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e\u003cstrong\u003e \u003c\/strong\u003eAlternatively, you can place the fruiting block in a chamber such as a \u003c\/span\u003e\u003cspan class=\"NormalTextRun SpellingErrorV2Themed SCXW74056964 BCX0\"\u003eMonoTub\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e or Martha tent for \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eoptimal\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e growth, as this will help \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003emaintain\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e ideal fruiting conditions.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Paragraph SCXW74056964 BCX0\"\u003e\n\u003cstrong\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-GB\" class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003eHarvest:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"TextRun Highlight SCXW74056964 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e\u003cstrong\u003e \u003c\/strong\u003eAfter around \u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e30\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW74056964 BCX0\"\u003e days, the mushrooms should reach full size. Gently twist at the base to harvest.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk \u003cspan\u003eShiitake\u003c\/span\u003e Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e30 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit \u003cspan\u003eShiitake\u003c\/span\u003e blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746065527128,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746065559896,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746065592664,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746065625432,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746065658200,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746065690968,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkShiitakeMushroomFruitingBlock.png?v=1771514276"},{"product_id":"bulk-blue-oyster-mushroom-fruiting-block","title":"Bulk Blue Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Blue Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Blue Oyster\u003cspan\u003e mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eBlue Oyster (\u003c\/span\u003e\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Blue Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg \u003cspan\u003eBlue Oyster\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh \u003cspan\u003eBlue Oyster\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing \u003cspan\u003eBlue Oyster\u003c\/span\u003e fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Blue Oyster mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit \u003cspan\u003eBlue Oyster \u003c\/span\u003eblocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised \u003cspan\u003eBlue Oyster\u003c\/span\u003e fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruit is mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk \u003cspan\u003eBlue Oyster\u003c\/span\u003e Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushroom blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746078732632,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746078765400,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746078798168,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746078830936,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746078863704,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746078896472,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkBlueOysterMushroomFruitingBlock.png?v=1771514275"},{"product_id":"bulk-reishi-mushroom-fruiting-block","title":"Bulk Reishi Mushroom Fruiting Block","description":"\u003ch1\u003eBulk \u003cspan\u003eReishi\u003c\/span\u003e Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable \u003cspan\u003eReishi\u003c\/span\u003e\u003cspan\u003e mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit \u003cspan\u003eReishi (\u003c\/span\u003e\u003cem\u003eGanoderma lucidum\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Reishi Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg \u003cspan\u003eReishi\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh \u003cspan\u003eReishi\u003c\/span\u003e mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing \u003cspan\u003eReishi\u003c\/span\u003e fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Reishi mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit \u003cspan\u003eReishi\u003c\/span\u003e Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit \u003cspan\u003eReishi\u003c\/span\u003e blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit \u003cspan\u003eReishi\u003c\/span\u003e blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting \u003cspan\u003eReishi\u003c\/span\u003e mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised \u003cspan\u003eReishi\u003c\/span\u003e fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eTwo ways to fruit:\u003c\/p\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW249243009 BCX0\"\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cspan class=\"TextRun Highlight SCXW249243009 BCX0\" lang=\"EN-GB\" data-contrast=\"auto\"\u003e\u003cstrong\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eFor Antlers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003e\u003cstrong\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"TextRun Highlight SCXW249243009 BCX0\" lang=\"EN-GB\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eKeep the grow bag sealed to\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003emaintain\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003e\u003cspan\u003e \u003c\/span\u003ehigh CO2 levels, encouraging long,\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eantler\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003e-like structures. Ensure indirect light, warm temperatures (21-27°C) and minimal airflow. \u003c\/span\u003e\u003c\/span\u003e\u003cspan data-ccp-props=\"{}\" class=\"EOP SCXW249243009 BCX0\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eFor Conks\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003e\u003cstrong\u003e:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan class=\"TextRun Highlight SCXW249243009 BCX0\" lang=\"EN-GB\" data-contrast=\"auto\"\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eFully open the grow bag or make large slits to allow fresh air, reducing CO2 and promoting flat, fan-like growths with red and white bands. Place the block in a well-\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW249243009 BCX0\"\u003eventilated area, with indirect light, warmth (21-27°C), and regular misting to keep humidity high.\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\" data-ccp-props=\"{}\" class=\"EOP SCXW249243009 BCX0\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003col\u003e\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk \u003cspan\u003eReishi\u003c\/span\u003e Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit \u003cspan\u003eReishi\u003c\/span\u003e blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746084434264,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746084467032,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746084499800,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746084532568,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746084565336,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746084598104,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkReishiMushroomFruitingBlock.png?v=1771514275"},{"product_id":"bulk-golden-oyster-mushroom-fruiting-block","title":"Bulk Golden Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk \u003cspan\u003eGolden Oyster\u003c\/span\u003e Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable \u003cspan\u003eGolden Oyster\u003c\/span\u003e\u003cspan\u003e mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit \u003cspan\u003eGolden Oyster\u003c\/span\u003e\u003cspan\u003e (\u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e) \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Golden Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg \u003cspan\u003eGolden Oyster\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh \u003cspan\u003eGolden Oyster\u003c\/span\u003e mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing \u003cspan\u003eGolden Oyster\u003c\/span\u003e fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready \u003c\/strong\u003e- Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see \u003cspan\u003eGolden Oyster\u003c\/span\u003e mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit \u003cspan\u003eGolden Oyster\u003c\/span\u003e Fruiting Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit \u003cspan\u003eShiitake\u003c\/span\u003e blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Shiitake blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting \u003cspan\u003eGolden Oyster mushrooms\u003c\/span\u003e with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised \u003cspan\u003eGolden Oyster\u003c\/span\u003e fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want \u003cspan\u003eGolden Oyster mushrooms\u003c\/span\u003e to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruits are mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk \u003cspan\u003eGolden Oyster\u003c\/span\u003e Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit \u003cspan\u003eGolden Oyster\u003c\/span\u003e blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746116251992,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746116284760,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746116317528,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746116350296,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746116383064,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746116415832,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkGoldenOysterMushroomFruitingBlock.png?v=1771514276"},{"product_id":"bulk-blue-oyster-mushroom-grow-kit","title":"Bulk Blue Oyster Mushroom Grow Kit","description":"\u003ch1\u003eBulk \u003cspan\u003eBlue Oyster\u003c\/span\u003e Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003e(\u003c\/span\u003e\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality \u003cspan\u003eBlue Oyster mushrooms\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Blue Oyster Mushroom Grow Kits\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushroom fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh \u003cspan\u003eBlue Oyster\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing \u003cspan\u003eBlue Oyster\u003c\/span\u003e grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/blue-oyster-mushroom-grow-kit\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushroom with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go \u003cspan\u003eBlue Oyster\u003c\/span\u003e grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the \u003cspan\u003eBlue Oyster\u003c\/span\u003e mushrooms to form\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlue Oyster mushrooms\u003c\/span\u003e will begin forming from the cut. Continue misting daily. Harvest when the fruits are mature. Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk \u003cspan\u003eBlue Oyster\u003c\/span\u003e Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit \u003cspan\u003eBlue Oyster\u003c\/span\u003e grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746156392792,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746156425560,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746156458328,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746156491096,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746156523864,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746156556632,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Blue_Oyster_Mushroom_Grow_Kit.png?v=1772028375"},{"product_id":"bulk-king-oyster-mushroom-grain-spawn-bag","title":"Bulk King Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eKing Oyster\u003c\/span\u003e mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eKing Oyster\u003c\/span\u003e grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready \u003cmeta charset=\"UTF-8\"\u003e King Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eKing Oyster\u003c\/span\u003e mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/king-oyster-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready King Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk \u003cmeta charset=\"UTF-8\"\u003e \u003cspan\u003eKing Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eKing Oyster\u003c\/span\u003e mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746248601944,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746248634712,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746248667480,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746248700248,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746248733016,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746248765784,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkKingOysterMushroomGrainSpawnBag.png?v=1771514277"},{"product_id":"bulk-blue-oyster-mushroom-grain-spawn-bag","title":"Bulk Blue Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Blue Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/blue-oyster-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready \u003cspan\u003eBlue Oyster\u003c\/span\u003e spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk \u003cspan\u003eBlue\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746252796248,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746252829016,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746252861784,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746252894552,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746252927320,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746252960088,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkBlueOysterMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-golden-oyster-mushroom-grain-spawn-bag","title":"Bulk Golden Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Golden Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/golden-oyster-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready \u003cspan\u003eGolden\u003c\/span\u003e Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk \u003cspan\u003eGolden\u003c\/span\u003e\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746261807448,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746261840216,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746261872984,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746261905752,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746261938520,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746261971288,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkGoldenOysterMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-elm-oyster-mushroom-grain-spawn-bag","title":"Bulk Elm Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Elm\u003cspan\u003e Oyster \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Elm\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Elm\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Elm Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Elm\u003cspan\u003e Oyster\u003c\/span\u003e mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/elm-oyster-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Elm\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Elm Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Elm\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Elm\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Elm\u003cspan\u003e Oyster\u003c\/span\u003e grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Elm\u003cspan\u003e Oyster\u003c\/span\u003e performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Elm\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Elm\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56746271342936,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56746271375704,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56746271408472,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56746271441240,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56746271474008,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56746271506776,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkElmOysterMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-pink-oyster-mushroom-grain-spawn-bag","title":"Bulk Pink Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Pink\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pink Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Pink\u003cspan\u003e Oyster\u003c\/span\u003e mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/pink-oyster-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Pink\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Pink Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Pink\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Pink\u003cspan\u003e Oyster\u003c\/span\u003e grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Pink\u003cspan\u003e Oyster\u003c\/span\u003e grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Pink\u003cspan\u003e Oyster\u003c\/span\u003e performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56752039919960,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56752039952728,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56752039985496,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56752040018264,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56752040051032,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56752040083800,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPinkOysterMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-shiitake-mushroom-grain-spawn-bag","title":"Bulk Shiitake Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Shiitake\u003cspan\u003e \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Shiitake\u003cspan\u003e mushroom \u003c\/span\u003egrows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Shiitake grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Shiitake Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Shiitake mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/shiitake-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Shiitake grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Shiitake spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Shiitake grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Shiitake grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Shiitake grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Shiitake performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Shiitake Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Shiitake mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56752057057624,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56752057090392,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56752057123160,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56752057155928,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56752057188696,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56752057221464,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkShiitakeMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-reishi-mushroom-grain-spawn-bag","title":"Bulk Reishi Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Reishi\u003cspan\u003e \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Reishi\u003cspan\u003e mushroom \u003c\/span\u003egrows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Reishi grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Reishi Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Reishi mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/reishi-mushroom-grain-spawn-bag\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Reishi grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Reishi spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Reishi grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Reishi grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Reishi grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Reishi performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Reishi Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Reishi mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56752060596568,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56752060629336,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56752060662104,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56752060694872,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56752060727640,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56752060760408,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkReishiMushroomGrainSpawnBag.png?v=1771514276"},{"product_id":"bulk-sterilised-masters-mix-mushroom-substrate-bag","title":"Bulk Sterilised Master's Mix Mushroom Substrate Bag","description":"\u003ch1\u003eBulk Sterilised Master's Mix Mushroom Substrate Bags – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your spawn production with lab-prepped hardwood, soyhulls and gypsum substrate that’s ready to mix with grain spawn. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Master's Mix substrate bag is prepared in clean room conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose 2kg or 3kg bags in 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Sterilised Master's Mix Blend\u003c\/h2\u003e\n\u003cp\u003eOur sterilised Master's Mix substrate is a ready-to-use bulk fruiting substrate designed for high-throughput cultivation and trade resale. Each bag is produced under controlled processes to prioritise sterility, consistency, and supply reliability.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile CVG substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/sterilised-substrate\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh water-holding capacity\u003c\/strong\u003e - Master's Mix acts like a moisture reservoir, supporting fuller flushes and reducing the need to over-mist or fight drying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Master's Mix is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003eTwo bag weights: 2kg or 3kg to fit different SOPs\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated hardwood, soyhulls and gypsum blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile Master's Mix line with repeatable quality\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven Master's Mix blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine spawn-to-bulk runs with clean, fully colonised grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning to bulk in tubs using Master's Mix substrate\u003c\/li\u003e\n\u003cli\u003eDialing in consistent surface conditions (hydration + airflow) to support strong, even colonisation and pinning\u003c\/li\u003e\n\u003cli\u003eRepeatable grow cycles when you want predictable bulk-run timing (varies by culture, spawn ratio, and environment)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2kg or 3kg sterilised Master's Mix substrate bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and clean your tub\/tray.\u003c\/li\u003e\n\u003cli\u003eBreak up your fully colonised grain spawn in its bag\/jar so it mixes evenly.\u003c\/li\u003e\n\u003cli\u003eMix spawn with Master's Mix substrate in your tub\/tray until evenly distributed.\u003c\/li\u003e\n\u003cli\u003eLevel and lightly compress the surface to create a uniform top layer.\u003c\/li\u003e\n\u003cli\u003eIncubate until the bulk is fully colonised.\u003c\/li\u003e\n\u003cli\u003eIntroduce fruiting conditions once fully colonised (fresh air + surface humidity balance).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: Master's Mix substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk Sterilised Master's Mix Substrate Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaster's Mix blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHardwood, soyhulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2kg \/ 3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMix with colonised grain spawn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 137.157px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 64.5675%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003e100% Premium Hardwood, Soyhulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.5754%; height: 19.5938px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5675%; height: 19.5938px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let substrate prep slow you down. Ensure your supply chain with the UK's most reliable Master's Mix substrate.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"2kg \/ 25","offer_id":56782939816280,"sku":null,"price":283.5,"currency_code":"GBP","in_stock":true},{"title":"2kg \/ 50","offer_id":56782939849048,"sku":null,"price":540.5,"currency_code":"GBP","in_stock":true},{"title":"2kg \/ 100","offer_id":56782939881816,"sku":null,"price":986.0,"currency_code":"GBP","in_stock":true},{"title":"2kg \/ 250","offer_id":56782939914584,"sku":null,"price":2242.5,"currency_code":"GBP","in_stock":true},{"title":"2kg \/ 500","offer_id":56782939947352,"sku":null,"price":3955.0,"currency_code":"GBP","in_stock":true},{"title":"2kg \/ 1000","offer_id":56782939980120,"sku":null,"price":6950.0,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 25","offer_id":56782940012888,"sku":null,"price":323.25,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 50","offer_id":56782940045656,"sku":null,"price":592.0,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 100","offer_id":56782940078424,"sku":null,"price":1094.0,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 250","offer_id":56782940111192,"sku":null,"price":2467.5,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 500","offer_id":56782940143960,"sku":null,"price":4455.0,"currency_code":"GBP","in_stock":true},{"title":"3kg \/ 1000","offer_id":56782940176728,"sku":null,"price":7950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Sterilised_CVG_Mushroom_Substrate_Bag_2kg.png?v=1772022380"},{"product_id":"bulk-sterilised-rye-mushroom-grain-spawn-bags","title":"Bulk Sterilised Rye Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Sterilised Rye Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your spawn production with lab-prepped rye grain that’s ready to inoculate. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach bulk rye grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose between 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Rye Grain\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised rye grain, optimally hydrated and sealed in an injection-port bag - designed as a fast, contamination-resistant foundation for grain spawn production.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/sterilised-grain\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong, clean colonisation\u003c\/strong\u003e – Firm rye kernels hold their structure well and shake up easily, helping mycelium spread evenly through the bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-healing injection ports\u003c\/strong\u003e - Make inoculation straightforward, whether you’re using spores or liquid culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to inoculate on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a sterile grain line with repeatable quality\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine inoculation runs with consistent, clean grain\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning to bulk with CVG-style substrates for tub grows\u003c\/li\u003e\n\u003cli\u003eWood-based fruiting blocks when paired with hardwood substrate mixes\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg sterilised rye grain bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the injection area on the bag.\u003c\/li\u003e\n\u003cli\u003eInject your spores or culture through the self-healing port.\u003c\/li\u003e\n\u003cli\u003eIncubate until colonised (often 3–4 weeks, depending on culture and conditions).\u003c\/li\u003e\n\u003cli\u003eSpawn to bulk:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003eFor monotub grows: 2:1 CVG bulk substrate : spawn\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFor gourmet mushrooms on wood substrate: 6:1 wood substrate : spawn\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 293.907px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 75.3743%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003eBulk Sterilised Rye Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003eRye grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 39.1875px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 39.1875px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eInoculation guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003e~5ml spore or culture solution via injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 58.7812px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 58.7812px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 21.8506%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.3743%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Rye Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk rye grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56783053160792,"sku":null,"price":226.75,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56783053193560,"sku":null,"price":414.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56783053226328,"sku":null,"price":751.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56783053259096,"sku":null,"price":1682.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56783053291864,"sku":null,"price":2915.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56783053324632,"sku":null,"price":5180.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkSterilisedMilletMushroomGrainSpawnBag1.5kg_847d41db-e0db-4ccc-a2bc-e36c3a11dd08.png?v=1771948066"},{"product_id":"bulk-pink-oyster-mushroom-fruiting-block","title":"Bulk Pink Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Pink Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Pink Oyster mushroom yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Pink Oyster \u003cspan\u003e(\u003c\/span\u003e\u003cem\u003ePleurotus djamor\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pink Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Pink Oyster fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Pink Oyster across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Pink Oyster fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Pink Oyster mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Pink Oyster Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Pink Oyster blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Pink Oyster blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Pink Oyster mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Pink Oyster fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want Pink Oyster mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruit is mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Pink Oyster Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 71.3645%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Pink Oyster blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56783275655512,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56783275688280,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56783275721048,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56783275753816,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56783275786584,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56783275819352,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPinkOysterMushroomFruitingBlock.png?v=1771949326"},{"product_id":"bulk-elm-oyster-mushroom-fruiting-block","title":"Bulk Elm Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Elm Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Elm Oyster mushroom yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Elm Oyster \u003cspan\u003e(\u003c\/span\u003e\u003cem\u003eHypsizygus ulmarius\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Elm Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Elm Oyster fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Elm Oyster mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Elm Oyster fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Elm Oysters mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Elm Oyster Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Elm Oyster blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Elm Oyster blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Elm Oyster mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Elm Oyster fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want Elm Oyster mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruits are mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Elm Oyster Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 71.3645%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Elm Oyster blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56783324184920,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56783324217688,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56783324250456,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56783324283224,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56783324315992,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56783324348760,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkElmOysterMushroomFruitingBlock.png?v=1771949326"},{"product_id":"bulk-pearl-oyster-mushroom-fruiting-block","title":"Bulk Pearl Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Pearl Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Pearl Oyster mushroom yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Pearl Oyster \u003cspan\u003e(\u003c\/span\u003e\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pearl Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Pearl Oyster fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Pearl Oyster mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Pearl Oyster fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Pearl Oyster mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Pearl Oyster Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Pearl Oyster blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Pearl Oyster blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Pearl Oyster mushrooms with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Pearl Oyster fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want Pearl Oyster mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruit is full and white (before significant yellowing)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Pearl Oyster Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 71.3645%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Pearl Oyster blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56783371108696,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56783371141464,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56783371174232,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56783371207000,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56783371239768,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56783371272536,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPearlOysterMushroomFruitingBlock.png?v=1771949326"},{"product_id":"bulk-black-pearl-king-oyster-mushroom-grain-spawn-bag","title":"Bulk Black Pearl King Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Black Pearl King Oyster Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Black Pearl King Oyster mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Black Pearl King Oyster grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Black Pearl King Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and and fully colonised with vigorous Black Pearl King Oyster mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/grain-spawn\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Black Pearl King Oyster grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Black Pearl King Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Black Pearl King Oyster grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Black Pearl King Oyster grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Black Pearl King Oyster grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Black Pearl King Oyster mushroom performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Black Pearl King Oyster Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Black Pearl King Oyster mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56788760297816,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56788760330584,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56788760363352,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56788760396120,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56788760428888,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56788760461656,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkBlackPearlKingOysterMushroomGrainSpawnBag.png?v=1771952315"},{"product_id":"bulk-speckled-chestnut-mushroom-grain-spawn-bag","title":"Bulk Speckled Chestnut Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Speckled Chestnut\u003cspan\u003e \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Speckled Chestnut\u003cspan\u003e mushroom \u003c\/span\u003egrows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Speckled Chestnut grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Speckled Chestnut Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Speckled Chestnut mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/grain-spawn\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Speckled Chestnut grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Speckled Chestnut spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Speckled Chestnut grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Speckled Chestnut grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Speckled Chestnut grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Speckled Chestnut performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.71875px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.59375px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eBulk Speckled Chestnut Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Speckled Chestnut mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56788795523416,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56788795556184,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56788795588952,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56788795621720,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56788795654488,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56788795687256,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkChestnutMushroomGrainSpawnBag.png?v=1771952316"},{"product_id":"bulk-pioppino-mushroom-grain-spawn-bag","title":"Bulk Pioppino Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Pioppino\u003cspan\u003e \u003c\/span\u003eMushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Pioppino\u003cspan\u003e mushroom \u003c\/span\u003egrows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Pioppino grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pioppino Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and fully colonised with vigorous Pioppino mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/grain-spawn\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Pioppino grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Pioppino spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Pioppino grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Pioppino grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Pioppino grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Pioppino performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.71875px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.59375px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eBulk Pioppino Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.59375px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.59375px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.59375px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Pioppino mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56788804239704,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56788804272472,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56788804305240,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56788804338008,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56788804370776,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56788804403544,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPioppinoMushroomGrainSpawnBag.png?v=1771952316"},{"product_id":"bulk-pearl-oyster-mushroom-grain-spawn-bag","title":"Bulk Pearl Oyster Mushroom Grain Spawn Bag","description":"\u003ch1\u003eBulk Pearl Oyster Mushroom Grain Spawn Bag – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eScale up your Pearl Oyster mushroom grows with vigorous, fully colonised grain spawn - ready to mix straight into hardwood or Master’s Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on.\u003c\/p\u003e\n\u003cp\u003eEach Pearl Oyster grain spawn bag is prepared in cleanroom conditions and sterilised in a computer-controlled autoclave, taking the guesswork out of prep so you can focus on growing, not fixing problems.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pearl Oyster Grain Spawn\u003c\/h2\u003e\n\u003cp\u003eThis is our best-selling sterilised millet + milo (milo = sorghum) grain blend, optimally hydrated and and fully colonised with vigorous Pearl Oyster mycelium - ready to spawn straight to bulk. Sealed in a sterile bag for clean handling and consistent performance, this is a fast, reliable foundation for repeatable bulk runs at scale.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing sterile grain range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/grain-spawn\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast bulk colonisation\u003c\/strong\u003e - A fully colonised grain bag delivers dense, distributed mycelium throughout the grain, supporting quick bulk colonisation and reducing the time the substrate sits uncolonised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.5kg Pearl Oyster grain spawn bag - fully colonised and standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eOptimally hydrated millet \u0026amp; milo blend for rapid colonisation\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready for spawning to bulk on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding a production‑ready Pearl Oyster spawn line with repeatable results\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with a proven grain blend and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine bulk spawning with fully colonised, clean Pearl Oyster grain spawn\u003c\/li\u003e\n\u003cli\u003eGrain-to-bulk workflows (monotubs and blocks)\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpawning directly into supplemented hardwood sawdust mixes\u003c\/li\u003e\n\u003cli\u003eFast “take‑off” and consistent runs when expanding into bulk production substrates\u003c\/li\u003e\n\u003cli\u003eCycle consistency when you need predictable colonisation windows (typically 3–4 weeks, culture-dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.5kg Pearl Oyster grain spawn bag (per unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe down your tools and mixing area.\u003c\/li\u003e\n\u003cli\u003eBreak up the spawn inside the sealed bag. Massage the bag to separate the fully colonised Pearl Oyster grain into loose kernels.\u003c\/li\u003e\n\u003cli\u003ePrepare your bulk substrate (wood-based). Pearl Oyster mushroom performs best on hardwood-based mixes (e.g., supplemented hardwood sawdust\/pellets). Make sure your substrate is properly pasteurised or sterilised for your recipe.\u003c\/li\u003e\n\u003cli\u003eOpen the bag in a clean area and mix the spawn evenly through your substrate.\u003c\/li\u003e\n\u003cli\u003eIncubate until fully colonised.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain is soaked\/cooked, hydrated to ~50% water content, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.9102%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBulk Pearl Oyster Mushroom Grain Spawn Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eGrain blend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eMillet + milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e1.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e~50% water content\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpawning guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eBreak up grains and mix into bulk wood substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical colonisation window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003e~3–4 weeks (culture\/conditions dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.2327%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.9102%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet + Milo Grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon't let grain prep slow you down. Ensure your supply chain with the UK's most reliable bulk Pearl Oyster mushroom grain spawn.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56789757264216,"sku":null,"price":220.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56789757296984,"sku":null,"price":407.0,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56789757329752,"sku":null,"price":746.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56789757362520,"sku":null,"price":1695.0,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56789757395288,"sku":null,"price":3135.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56789757428056,"sku":null,"price":5760.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPearlOysterMushroomGrainSpawnBag.png?v=1771952315"},{"product_id":"bulk-black-pearl-king-oyster-mushroom-fruiting-block","title":"Bulk Black Pearl King Oyster Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Black Pearl King Oyster Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Black Pearl King Oyster mushroom yields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Black Pearl King Oyster (\u003cmeta charset=\"UTF-8\"\u003e\u003cspan class=\"Yjhzub\"\u003e\u003cem data-processed=\"true\" class=\"eujQNb\"\u003ePleurotus ostreatus\u003c\/em\u003e hybrid)\u003c\/span\u003e fruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Black Pearl King Oyster Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Black Pearl King Oyster fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Black Pearl King Oyster mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Black Pearl King Oyster fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits?\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Black Pearl King Oyster mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat You Get\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Black Pearl King Oyster Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Black Pearl King Oyster blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit  Black Pearl King Oyster blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Black Pearl King Oyster with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Black Pearl King Oyster fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want Black Pearl King Oyster mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e maintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e keep a humid microclimate, vent daily for fresh air, and harvest when the fruits are mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Black Pearl King Oyster Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 71.3645%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 19.5938px;\"\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 19.5938px;\"\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 25.7784%; height: 39.1875px;\"\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.3645%; height: 39.1875px;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Black Pearl King Oyster blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56789784723800,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56789784756568,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56789784789336,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56789784822104,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56789784854872,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56789784887640,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkBlackPearlKingOysterMushroomFruitingBlock.png?v=1771949326"},{"product_id":"bulk-speckled-chestnut-mushroom-fruiting-block","title":"Bulk Speckled Chestnut Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Speckled Chestnut Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Speckled Chestnut\u003cspan\u003e mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Speckled Chestnut\u003cspan\u003e (\u003cem class=\"eujQNb\" data-processed=\"true\"\u003ePholiota adiposa\u003c\/em\u003e\u003c\/span\u003e\u003cspan\u003e) \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Speckled Chestnut Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Speckled Chestnut\u003cspan\u003e \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Speckled Chestnut\u003cspan\u003e mushrooms\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Speckled Chestnut fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see \u003cspan\u003eShiitake mushrooms\u003c\/span\u003e develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Speckled Chestnut Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Speckled Chestnut blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Speckled Chestnut blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Speckled Chestnut\u003cspan\u003e mushrooms\u003c\/span\u003e with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Speckled Chestnut fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW74056964 BCX0\"\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want\u003cspan\u003e Speckled Chestnut\u003c\/span\u003e\u003cspan\u003e mushrooms\u003c\/span\u003e to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emaintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ekeep a humid microclimate, vent daily for fresh air, and harvest when the fruits are mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Speckled Chestnut Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e30 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Speckled Chestnut blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56789903999320,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56789904032088,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56789904064856,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56789904097624,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56789904130392,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56789904163160,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkChestnutMushroomFruitingBlock.png?v=1771949327"},{"product_id":"bulk-pioppino-mushroom-fruiting-block","title":"Bulk Pioppino Mushroom Fruiting Block","description":"\u003ch1\u003eBulk Pioppino Mushroom Fruiting Block – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Pioppino\u003cspan\u003e mushroom \u003c\/span\u003eyields at volume without babysitting colonisation? Our 3kg, ready-to-fruit Pioppino\u003cspan\u003e (\u003cem class=\"eujQNb\" data-processed=\"true\"\u003eCyclocybe aegerita\u003c\/em\u003e\u003c\/span\u003e\u003cspan\u003e) \u003c\/span\u003efruiting blocks are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEvery block is built on a nutrient-dense substrate and produced with lab-grade process control, backed by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e for total risk reversal.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Pioppino Fruiting Blocks\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 3kg Pioppino\u003cspan\u003e \u003c\/span\u003efruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 1kg+ fresh Pioppino\u003cspan\u003e mushrooms\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Pioppino fruiting blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/fruiting-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see \u003cspan\u003ePioppino mushrooms\u003c\/span\u003e develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e3kg Ready-to-Fruit Pioppino Block - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Pioppino blocks with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Pioppino blocks and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Pioppino\u003cspan\u003e mushrooms\u003c\/span\u003e with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent first flushes when you need a reliable, ready-to-go block (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3kg fully colonised Pioppino fruiting block\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW74056964 BCX0\"\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your workspace and wipe the bag around the fruiting area.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit on the front of the bag where you want\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePioppino mushrooms\u003c\/span\u003e to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003eFruit and harvest:\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor tent\/Martha-style fruiting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emaintain high humidity + regular fresh air exchange for clean, dense growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bag\/dome fruiting in a smaller space:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ekeep a humid microclimate, vent daily for fresh air, and harvest when the fruits are mature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Pioppino Mushroom Fruiting Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e30 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing rubber injection port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Pioppino blocks.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56789969666392,"sku":null,"price":299.5,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56789969699160,"sku":null,"price":547.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56789969731928,"sku":null,"price":1048.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56789969764696,"sku":null,"price":2487.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56789969797464,"sku":null,"price":4745.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56789969830232,"sku":null,"price":8980.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/BulkPioppinoMushroomFruitingBlock.png?v=1771949327"},{"product_id":"bulk-golden-oyster-mushroom-grow-kit","title":"Bulk Golden Oyster Mushroom Grow Kit","description":"\u003ch1\u003eBulk Golden\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit Golden\u003cspan\u003e Oyster\u003c\/span\u003e \u003cmeta charset=\"UTF-8\"\u003e(\u003cspan\u003e\u003cem class=\"eujQNb\" data-processed=\"true\"\u003ePleurotus citrinopileatus\u003c\/em\u003e\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality Golden\u003cspan\u003e Oyster mushrooms\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Golden Oyster Mushroom Grow Kits\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushroom fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh Golden\u003cspan\u003e Oyster\u003c\/span\u003e across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Golden\u003cspan\u003e Oyster\u003c\/span\u003e grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/beginners-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit Golden\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Golden\u003cspan\u003e Oyster\u003c\/span\u003e grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Golden\u003cspan\u003e Oyster\u003c\/span\u003e grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushroom with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go Golden\u003cspan\u003e Oyster\u003c\/span\u003e grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the Golden\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms to form\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eGolden Oyster mushrooms\u003c\/span\u003e will begin forming from the cut. Continue misting daily. Harvest when the fruits are mature. Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Golden\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Golden\u003cspan\u003e Oyster\u003c\/span\u003e grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56796274229592,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56796274262360,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56796274295128,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56796274327896,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56796274360664,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56796274393432,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Golden_Oyster_Mushroom_Grow_Kit.png?v=1772028375"},{"product_id":"bulk-black-pearl-king-oyster-mushroom-grow-kit","title":"Bulk Black Pearl King Oyster Mushroom Grow Kit","description":"\u003ch1\u003eBulk Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit Black Pearl King \u003cspan\u003eOyster\u003c\/span\u003e \u003cmeta charset=\"UTF-8\"\u003e(\u003cmeta charset=\"UTF-8\"\u003e\u003cem data-processed=\"true\" class=\"eujQNb\"\u003ePleurotus ostreatus\u003c\/em\u003e\u003cspan\u003e hybrid\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality Black Pearl King\u003cspan\u003e Oyster mushrooms\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Black Pearl King Oyster Mushroom Grow Kits\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg Black Pearl King Oyster mushroom fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/beginners-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushroom with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms to form\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlack Pearl King Oyster mushrooms\u003c\/span\u003e will begin forming from the cut. Continue misting daily. Harvest when the fruits are mature. Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Black Pearl King\u003cspan\u003e Oyster\u003c\/span\u003e grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56796297822552,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56796297855320,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56796297888088,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56796297920856,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56796297953624,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56796297986392,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Black_Pearl_King_Oyster_Mushroom_Grow_Kit.png?v=1772028375"},{"product_id":"bulk-speckled-chestnut-mushroom-grow-kit","title":"Bulk Speckled Chestnut Mushroom Grow Kit","description":"\u003ch1\u003eBulk Speckled Chestnut Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Speckled Chestnut mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit Speckled Chestnut \u003cmeta charset=\"UTF-8\"\u003e(\u003cem class=\"eujQNb\" data-processed=\"true\"\u003ePholiota adiposa\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality Speckled Chestnut\u003cspan\u003e mushrooms\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003eWholesale‑Ready Speckled Chestnut Mushroom Grow Kits\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg Speckled Chestnut mushroom fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh Speckled Chestnut across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Speckled Chestnut grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/beginners-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Speckled Chestnut mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit Speckled Chestnut Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Speckled Chestnut grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Speckled Chestnut grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Speckled Chestnut mushroom with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go Speckled Chestnut grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised \u003cspan\u003eSpeckled Chestnut\u003c\/span\u003e mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the Speckled Chestnut mushrooms to form\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSpeckled Chestnut mushrooms\u003c\/span\u003e will begin forming from the cut. Continue misting daily. Harvest when the fruits are mature. Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Speckled Chestnut Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Speckled Chestnut grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56796407038296,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56796407071064,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56796407103832,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56796407136600,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56796407169368,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56796407202136,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Speckled_Chestnut_Mushroom_Grow_Kit.png?v=1772028376"},{"product_id":"bulk-pink-oyster-mushroom-grow-kit","title":"Bulk Pink Oyster Mushroom Grow Kit","description":"\u003ch1\u003eBulk Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit – 25–1000 Unit Packs\u003c\/h1\u003e\n\u003cp\u003eNeed reliable Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom yields at volume without babysitting colonisation? Our 1.6kg, ready-to-fruit Pink\u003cspan\u003e Oyster\u003c\/span\u003e \u003cmeta charset=\"UTF-8\"\u003e(\u003cem\u003ePleurotus djamor\u003c\/em\u003e\u003cspan\u003e)\u003c\/span\u003e fruiting kits are made in the UK and supplied in bulk packs from 25 to 1000 units - ideal for commercial rooms, scaling growers, and retailers who want consistent stock.\u003c\/p\u003e\n\u003cp\u003eEach kit comes boxed for a cleaner, easier fruiting setup: simply remove the front panel, cut the bag, and mist once or twice a day to trigger dense, high-quality Pink\u003cspan\u003e Oyster mushrooms\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose from 25, 50, 100, 250, 500 or 1000 unit packs for commercial consistency and better unit economics.\u003c\/p\u003e\n\u003cp\u003eNeed trade support, custom scheduling, or a tailored quote? \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eContact us\u003c\/a\u003e and we’ll build a supply plan around your volume.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWholesale‑Ready Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is a pre-colonised 1.6kg Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom fruiting block designed to go straight into fruiting conditions - no inoculation step required. It’s capable of producing 700g+ fresh Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms across multiple flushes when conditions are dialled in.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial farms and scaling growers who rely on consistent cycle times and repeatable results\u003c\/li\u003e\n\u003cli\u003eHigh-volume hobby growers who want access to wholesale pricing without complicated sourcing\u003c\/li\u003e\n\u003cli\u003eRetailers and resellers looking for a reliable, high-performing Pink\u003cspan\u003e Oyster\u003c\/span\u003e grow kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot a Bulk Buyer?\u003c\/h3\u003e\n\u003cp\u003eThis page is for \u003cstrong\u003etrade, wholesale, and high‑volume growers\u003c\/strong\u003e ordering \u003cstrong\u003e25–1000+ units\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you’re a \u003cstrong\u003ehobby grower\u003c\/strong\u003e or want to \u003cstrong\u003etrial smaller quantities first\u003c\/strong\u003e, use our standard (non‑bulk) listing \u003ca href=\"https:\/\/martian-mushrooms.com\/collections\/beginners-kits\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from the source\u003c\/strong\u003e - You get the best price. It's all about direct supply from a top UK mushroom supplier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScale whenever you’re ready\u003c\/strong\u003e - Need 25 now or 1,000+ regularly? We’ve got you covered year-round.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid fruiting start\u003c\/strong\u003e - Fully colonised and ready to go, so you can move straight to fruiting and see Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms develop sooner with no waiting around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, commercial-grade sterility\u003c\/strong\u003e - Each batch is sterilised for 2.5 hours at 121°C in a computer-controlled autoclave at our Kent facility, giving you a contamination-free grows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfectly balanced moisture\u003c\/strong\u003e - Grain and hardwood blend substrate is hydrated just right to encourage healthy, vigorous growth without inviting bacteria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality filtration\u003c\/strong\u003e - 0.2-micron filter patches let the bags breathe while helping keep contaminants out - so you get more consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat You Get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBulk packs 25–1000 to match your production runs\u003c\/li\u003e\n\u003cli\u003e1.6kg Ready-to-Fruit Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit - standardised for consistent runs and simple SOPs.\u003c\/li\u003e\n\u003cli\u003eSupplemented hardwood blend, hydrated for consistent fruiting\u003c\/li\u003e\n\u003cli\u003eCleanroom-prepped and ready to fruit on arrival\u003c\/li\u003e\n\u003cli\u003eSterilised in a computer-controlled autoclave (2.5 hrs @ 121°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e (we stand behind every bag)\u003c\/li\u003e\n\u003cli\u003eFree UK delivery on £50+ orders helps protect margins\u003c\/li\u003e\n\u003cli\u003ePay in 3 interest-free instalments available at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003ch3\u003eProduct Sellers (retailers, resellers, garden centres)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding ready-to-fruit Pink\u003cspan\u003e Oyster\u003c\/span\u003e grow kits with consistent, repeatable quality.\u003c\/li\u003e\n\u003cli\u003eOffering case quantities for serious growers\u003c\/li\u003e\n\u003cli\u003eImproving customer outcomes with fully colonised, ready-to-fruit Pink\u003cspan\u003e Oyster\u003c\/span\u003e grow kits and guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrowers (commercial \u0026amp; high-volume)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine fruiting runs with consistent, clean performance\u003c\/li\u003e\n\u003cli\u003eFruiting workflows (tent, tubs, or fruiting bags) from cut-to-harvest\u003c\/li\u003e\n\u003cli\u003eFaster SOPs: no soaking\/cooking\/sterilising on your end\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFruiting Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom with minimal prep\u003c\/li\u003e\n\u003cli\u003eConsistent flushes when you need a reliable, ready-to-go Pink\u003cspan\u003e Oyster\u003c\/span\u003e grow kits (no grain-to-bulk step required)\u003c\/li\u003e\n\u003cli\u003eStaggered harvest cycles - ideal for repeatable scheduling when running multiple blocks (timelines vary by conditions and strain\/culture)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.6kg fully colonised Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushroom grow kit\u003c\/li\u003e\n\u003cli\u003eUltra Fine Mister\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included: spore or liquid culture syringe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSanitise your hands and workspace. Cut open the front panel of the box to expose the bag.\u003c\/li\u003e\n\u003cli\u003eCut a small “X” or slit in the front of the bag where you want the Pink\u003cspan\u003e Oyster\u003c\/span\u003e mushrooms to form.\u003c\/li\u003e\n\u003cli\u003ePlace the block in a humid fruiting environment with fresh air exchange and indirect light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePink Oyster mushrooms\u003c\/span\u003e will begin forming from the cut. Continue misting daily. Harvest when the fruits are mature. Twist and pull gently, or cut cleanly at the base.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eQuality Guarantee\u003c\/h2\u003e\n\u003cp\u003eAt Martian Mushrooms, we don't just sell supplies; we use them.\u003c\/p\u003e\n\u003cp\u003eEvery batch is produced with lab-first discipline: grain + hardwood blend substrate is soaked\/cooked, hydrated to field capacity, and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.\u003c\/p\u003e\n\u003cp\u003eIf something goes wrong, you’re protected by our \u003ca href=\"https:\/\/martian-mushrooms.com\/products\/the-martian-lifetime-guarantee\"\u003eLifetime Guarantee\u003c\/a\u003e - built for growers who can’t afford downtime.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 72.6339%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eBulk Pink\u003cspan\u003e Oyster\u003c\/span\u003e Mushroom Grow Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBlend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eMillet, milo, hardwood pellets, soy hulls and gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBag weight options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e1.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulk pack sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e25 \/ 50 \/ 100 \/ 250 \/ 500 \/ 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eHydration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eField capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eSterilisation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003e2.5 hrs @ 121°C (computer-controlled autoclave)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eFruiting guide\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eMake a small X\/slit in the bag and place in high humidity + fresh air (indirect light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eTypical first harvest window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003e7–14 days (conditions\/strain dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 39.1875px;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 39.1875px;\"\u003eUse soon after arrival. Store at room temperature for up to 3-6 months. Refrigerate for up to 12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.5089%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.6339%; height: 19.5938px;\"\u003eFree UK delivery on £50+ orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eMartian Mushrooms vs. Competitors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% Premium Millet and Millet Grain, Hardwood Pellets, Soy Hulls and Gypsum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterilisation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial Autoclave (121°C @ 15psi+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 Micron Gas Exchange Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInjection Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing Rubber Injection Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBag Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (Autoclavable, High-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-12 Months (Store in a cool, dark place)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturing Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDon’t let prep work slow you down. Secure your supply with reliably consistent, ready-to-fruit Pink\u003cspan\u003e Oyster\u003c\/span\u003e grow kits.\u003c\/p\u003e\n\u003cp\u003eNeed a custom quote, white labelling, or pallet pricing (100+ units)?\u003c\/p\u003e\n\u003cp\u003eJoin our \u003ca href=\"https:\/\/martian-mushrooms.com\/pages\/wholesale-services\"\u003eGrowth Partner Program\u003c\/a\u003e.\u003c\/p\u003e","brand":"Martian Mushrooms","offers":[{"title":"25","offer_id":56796491186520,"sku":null,"price":274.25,"currency_code":"GBP","in_stock":true},{"title":"50","offer_id":56796491219288,"sku":null,"price":519.5,"currency_code":"GBP","in_stock":true},{"title":"100","offer_id":56796491252056,"sku":null,"price":996.0,"currency_code":"GBP","in_stock":true},{"title":"250","offer_id":56796491284824,"sku":null,"price":2232.5,"currency_code":"GBP","in_stock":true},{"title":"500","offer_id":56796491317592,"sku":null,"price":4225.0,"currency_code":"GBP","in_stock":true},{"title":"1000","offer_id":56796491350360,"sku":null,"price":7960.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2430\/6776\/files\/Bulk_Pink_Oyster_Mushroom_Grow_Kit.png?v=1772028376"}],"url":"https:\/\/martian-mushrooms.com\/collections\/bulk-mushroom-growing-supplies.oembed?page=3","provider":"Martian Mushrooms","version":"1.0","type":"link"}