{"title":"Bulk Sterilised Grain Spawn Bags","description":"","products":[{"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-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"}],"url":"https:\/\/martian-mushrooms.com\/collections\/bulk-sterilised-grain.oembed","provider":"Martian Mushrooms","version":"1.0","type":"link"}