Mycelium Supplies · Made in Wales
Mushroom growing supplies, prepared in Wales
Explore all-in-one grow bags, sterilised grain and substrates for your next grow.
Dispatched in 2–3 working daysPrepared and sent by us
Royal Mail TrackedFor all UK orders
Shipping by order weightCalculated at checkout
Find the right bag for your grow
Choose a combined grow bag, start with grain, or add substrate to your colonised grain.
All-in-one bags
Grain and substrate together, ready to inoculate with your chosen culture.
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Grain bags
Sterilised grain for making mushroom spawn before combining it with substrate.
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Substrate bags
Substrates for use with your colonised grain and a suitable growing setup.
Shop substrates →Your next grow starts here
New to mushroom growing?
Understand what each bag does, then follow the instructions for your chosen mushroom species and growing setup.
Read our growing guide- Choose your growing routeUse an all-in-one bag, or combine grain and substrate as separate steps.
- Prepare and inoculateUse your chosen culture and follow the bag’s instructions.
- Colonise, then fruitGive your mushrooms the conditions they need. Timing varies by species and setup.