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Fungi Akuafo Inc

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

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

Regular price $120.00 CAD
Regular price Sale price $120.00 CAD
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Advanced 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 to fruit.

Species Profile

King Oysters (Pleurotus eryngii) are large delicious mushrooms with meaty stems and tan caps. These mushrooms tend to be trickier to grow than other oyster varieties and do not usually produce a second flush.

King oysters prefer cooler temperatures (10oC to 18oC) and require consistent humidity as they are prone to drying out when they are young.


Our wholesale grain spawn comes in increments of 10 x 1kg.  Each bag of grain spawn is 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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