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Fungi Akuafo Inc

Grain Spawn - Chestnut (10 x 1kg) - Plastic Bag (Wholesale)

Grain Spawn - Chestnut (10 x 1kg) - Plastic Bag (Wholesale)

Regular price $120.00 CAD
Regular price Sale price $120.00 CAD
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Intermediate SkillIndoor growingFilter bag
  • Product may not ship for up to 4 weeks.
  • Mushrooms do not fruit from grain spawn.  Grain spawn needs to be added to a bulk substrate like to fruit.

Species Profile

Chestnut (Pholiota adiposa) grow in clusters.  They have brown or rusty tops with little speckles.  The stems are edible along with the caps and stay more crunchy when cooked.

Grow best on sterilized, nutrified sawdust.  Fruit in cooler temperatures, (10oC to 12oC)  with very high humidity.  They are slow growing and take 3-4 weeks to fruit once the bag is opened. 


Our 1kg bags of grain spawn are grown using mycelium cultures in our lab. We use sterilized organic rye grain sourced from the Canadian prairies through Grainworks. We make your spawn to order.

We incubate your freshly made spawn between 2-4 weeks to ensure it is strong and healthy. We then ship via Canada Post or notify you for pickup.


Grain spawn must be mixed
with a bulk substrate to fruit mushrooms.

We recommend:

Experienced growers: Use this spawn to inoculate sterilized nutrified sawdust in filter bags. under sterile conditions. At a 10% inoculation rate, 1 bag of grain spawn (1kg) will inoculate about 10 to 12 14A Unicorn filter bags of sterilized substrate.


If you are new to growing, we highly recommend you take a workshop or buy a book on mushroom cultivation.

Care information

If you do not plan to use your spawn immediately, store it in a clean, undisturbed corner of your fridge for up to 6 weeks.

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