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Fungi Akuafo Inc

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

Grain Spawn - Black Pearl (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 to fruit.

Species Profile

Black Pearl (Pleurotus spp.), also known as “Black King Trumpet”, is a delicious mushroom with brown marbled caps and long beefy stems.

A hybrid between pearl oysters and king oysters, these mushrooms are less finicky to grow than king oysters. They grow long stems in high CO2 conditions.

These mushrooms prefer moderate temperatures (10oC to 20oC) and are prone to drying when young if high humidity is not maintained.


    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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