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Folk Fungi

King Oyster Mushroom Grain Spawn

Regular price $30.00 CAD
Regular price Sale price $30.00 CAD
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Save by mixing and matching grain spawn
10% off (2-4)
15% off (5-8)
20% off (9+)
Skill level
Grow location
Spawn shelf life
4 months (refrigerated)
Bag weight
1.5 kg
Fruiting temps

Our king oyster (Pleurotus eryngii) grain spawn produces mushrooms with large white stems and tan caps, delivering a rich umami taste and meaty texture when cooked. 

Growing king oyster mushrooms can be a bit tricky. They thrive in cooler temperatures and require careful humidity management to avoid drying out. Typically, they yield one primary flush of mushrooms, yet with attentive care, additional flushes are possible.


    To fruit mushrooms, you can mix king oyster grain spawn into sterilized or pasteurized hardwood sawdust. If you've never used grain spawn before, make sure to read a mushroom cultivation book or watch a video tutorial online.


    • Weight: 1.5 kg
    • Hydration rate: 50%
    • Bag: 3 mil polypropylene
    • Filter: .2 micron


    White millet, Pleurotus eryngii mycelium.


    If not used immediately, store the grain spawn in the fridge for up to four months.



    We offer shipping to Canadian addresses through Canada Post and UPS. Shipping costs $20 for orders under $150. For orders $150 or more, shipping is free.

    Local delivery

    We offer local delivery to Winnipeg addresses through Trexity. Delivery costs $7 for orders under $150. For orders $150 and over, delivery is free.

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