Yellow Belly — Golden OysterGrain Spawn 5 lb
Yellow Belly — Golden Oyster (Pleurotus citrinopileatus), fully colonized grain spawn, 5 lb bag. Produced fresh in-house in Brantford, Ontario.
Yellow Belly — Golden Oyster Grain Spawn 5 lb
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Compatible next steps for this product—not random add-ons.

Pair your spawn with ready-to-inoculate hardwood substrate.
$44.95
Made Fresh to Order — Ships in 3–4 Weeks
Your card is charged when you order. We’ll prepare the next available batch and email tracking as soon as it ships.
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Nature Lion is based in Brantford, Ontario
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SKU: NL-10-SPAWN-5LB
Category: Mushroom Spawn Canada
Product Details
Yellow Belly is our Golden Oyster strain (Pleurotus citrinopileatus), supplied here as fully colonized grain spawn, 5 lb bag. Every culture is produced fresh in-house at our CFIA-licensed facility in Brantford, Ontario.
Grain spawn arrives fully colonized and ready to run: mix into pasteurized substrate, bulk containers, or outdoor beds depending on the species. Produced fresh to order — expect our standard fresh-to-order lead time before shipping.
Multiple strains of the same species share their common and scientific name — what makes this one different is the strain itself. Yellow Belly is maintained in our culture library and verified clean before anything leaves the lab.
Product description by Andrew Langevin · Founder, Nature Lion · Contributing author, Mushroomology (Brill, 2026)
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