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BUY 2 MUSHBAGSGET 1 FREE

BUY 2 MUSHBAGSGET 1 FREE

Looking for an easy, hassle-free way to grow mushrooms at home? The MushBag is an all-in-one grow kit designed to make growing large yields simple, with less mess, fewer steps and less risk of contamination. And with our Buy 2, Get 1 FREE offer, it’s an even better time to stock up on MushBags for your next grows.

🍄 Easy to use beginner mushroom grow kit

⚖️ Grow large yields of up to 1kg+ of fresh mushrooms

💉 Ready to inoculate with your spore or liquid culture of choice

🧪 Pre-sterilised under cleanroom lab conditions

🎁 Buy two MushBags and get the third FREE

🛡️ Guaranteed to produce mushrooms or we’ll replace your kit free of charge

NOT INCLUDED: Spore or liquid culture syringe – liquid cultures for gourmet varieties are available here.

Want to learn how to grow mushrooms with this kit? See our online guide here.

BUILD YOUR BUNDLE

CHOOSE YOUR QUANTITY

Add as many MushBags as you like.

Every third MushBag is FREE! Buy 2, get the 3rd free. Add more to unlock additional free bags automatically.
MushBag™ All-In-One Mushroom Grow Kit
MushBag™ All-In-One Mushroom Grow Kit
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Your total 0 Paid + 0 Free = 0 Kits

Description

Grow gourmet mushrooms at home with the MushBag™ All-In-One Mushroom Grow Kit.

Everything you need for colonisation and fruiting is contained in one convenient bag, making it a simple option for beginners and experienced growers alike. Just inoculate your MushBag, allow it to fully colonise, then follow the fruiting instructions to grow your mushrooms.

With our Buy 2, Get 1 Free offer, every third MushBag is automatically free — so you can stock up and save as you add more bags to your bundle.

Benefits

  • Beginner-friendly; no prior experience or knowledge required 
  • Grow large yields of up to 1kg+ of fresh mushrooms 
  • Proprietary millet, milo grain and CVG substrate blend is perfect for a wide variety of gourmet mushrooms, including Lion's Mane, Oyster and Shiitake 
  • Guaranteed to produce mushrooms or we’ll replace your kit free of charge  
  • Save money by growing your own mushrooms at home 
  • Grow fresh, delicious mushrooms you can't find in the shops  

How Does It Work

  1. Choose how many MushBags you want.
  2. Add your bundle to the basket.
  3. Every third MushBag is automatically FREE.
  4. Inoculate your MushBag and allow it to fully colonise.
  5. Follow the fruiting instructions and watch your mushrooms grow.

Growing Conditions

Temperature: 

  • Colonisation: Mycelium (the vegetative part of the fungus) colonises the substrate best at around 24-27°C (75-80°F).
  • Fruiting: For the fruiting stage when mushrooms begin to develop, slightly cooler temperatures (about 21-24°C, or 70-75°F) are recommended. 

Humidity: High humidity (over 90-95%) is essential for healthy, large fruits. Use misting, humidifiers, or a fruiting chamber to maintain humidity.    

Light:  

  • Colonisation: Complete darkness is preferred for rapid colonisation.    
  • Fruiting: Indirect sunlight or ambient light is sufficient. 

Fresh Air Exchange (FAE): Proper ventilation is necessary to provide the growing mushrooms with fresh air and prevent the buildup of carbon dioxide, which can inhibit growth.    

Sterility: Maintaining a clean and sterile environment is paramount to prevent contamination from other fungi or bacteria, which can compete with the mycelium and hinder its growth. 

Ingredients

Good ingredients make for excellent grow kits. That is why we only use 100% natural and organic millet, milo grain and CVG substrate in our kits. We only use the high-quality, natural ingredients for our products, specifically selected to support the optimal growth of mushrooms. 

Our fourth-generation all-in-one substrate blend is a mix of optimally hydrated millet grains, milo grains, coco coir, vermiculite and gypsum. This mixture is carefully hydrated to field capacity and sterilised in a computer-controlled steam autoclave for 2.5 hours at 121°C.  

The result is an optimal 2:1 substrate to spawn ratio, providing the perfect nutrient rich environment for mycelium, ensuring rapid colonisation, large yields and minimal risk of contamination. 

What's Included

WE DO NOT INCLUDE 

Spore or liquid culture syringe: Liquid cultures for gourmet varieties are available here.  

Physical copy of the growing guide: You can find our online step-by-step mushroom growing guide here, as well as some of our own tips and tricks for optimising your grow. We highly recommend reading it before purchasing! 

Storage

Please aim to use your MushBag soon after receiving it. If you are not using right away, store the substrate bag in the fridge. Stored this way, your kit should last at least 12 months.

View full details

FROM INOCULATION TO HARVEST. ALL IN ONE MUSHBAG.

Just inoculate, colonise and fruit.

Inoculate

Colonise

Fruit & Harvest

NO TRANSFERS. NO EXTRA SUBSTRATE. NO SPECIALIST SETUP.

YOUR KIT, AT A GLANCE

Everything you need for a simple all-in-one grow.

What is included in the mushroom grow kit

Up to

1kg

fresh mushrooms from one MushBag

Bag size

1.5kg

grain and CVG substrate in one bag

Prep

Ready to inoculate

with your culture of choice

Backed by

Lifetime

Martian guarantee

Real grows · real reviews

Join thousands growing mushrooms at home.

See the results, read the experiences and feel confident starting your first grow.

4.9/5700+ Total verified reviews

What growers say

★★★★★

“It was my first time trying a Lion's Mane mushroom and it was delicious. I'll be reordering soon.”

Aaren Saddul - Verified customer

DS - Verified customer
★★★★★

“Despite being rather neglected during a house move our blue oyster kit has produced an amazing crop of mushrooms (with more on the way!).”

DS - Verified customer

★★★★★

“Martian Mushrooms’ Golden Oyster kept on producing strong, colourful, and beautifully clustered right through January, in the middle of a UK winter.”

Richard Stones - Verified customer

AS - Verified customer
★★★★★

“The online instructions were extremely simple and in literally just over a few weeks I harvested my first Lions mane mushroom!”

AS - Verified customer

NEED TO KNOW

YOUR QUESTIONS, ANSWERED.

Everything you need to know before choosing your kit and getting started.

01 How does the MushBag work?

Inject the MushBag with your liquid culture, then leave it to colonise in optimal conditions. Once fully colonised, follow the fruiting instructions and grow your mushrooms directly from the same bag.

02 Is it suitable for beginners?

Yes. The MushBag is designed to make mushroom growing simple, with grain and substrate already combined in one pre-sterilised bag. Just follow the instructions through inoculation, colonisation and fruiting.

03 How long does it take to grow mushrooms?

Growing time varies depending on the mushroom variety, culture and conditions. The bag first needs to fully colonise before fruiting can begin, so follow the progress of the mycelium rather than relying on a fixed number of days.

04 Where should I keep my MushBag?

Keep it in a clean place indoors, away from direct sunlight and strong heat sources. The ideal conditions change between colonisation and fruiting, so follow the instructions provided with your kit.

05 How often should I mist it?

You do not need to mist the MushBag while it is colonising. Once you move to the fruiting stage, follow the care instructions and maintain suitable humidity without leaving the block waterlogged.

06 Do I need to buy liquid culture separately?

Yes. The MushBag arrives pre-sterilised and ready to inoculate, but a liquid culture syringe is not included.

07 Which mushroom varieties can I grow?

The MushBag can be inoculated with your chosen suitable mushroom liquid culture. Growing times, yields and fruiting requirements will vary between varieties.

08 Can I get more than one harvest?

Many mushroom varieties can produce more than one flush when cared for correctly. Results vary depending on the species and growing conditions, so follow the instructions for your chosen variety.

09 What happens if I have a problem with my MushBag?

Contact us with your order details and a clear photo of the kit. We will help you work out what is happening and advise on the next step.