Blue Oyster (Pleurotus ostreatus var. columbinus) mushroom grain spawn ready for grain-grain transfer or transfer to a bulk substrate for fresh home grown mushrooms!
Sold and shipped fully colonized in a 250mL or 500mL mason jar outfitted with a filter for air exchange. Grain spawn is made-to-order and will typically take 2-3 weeks to ship to allow for robust colonization.
Other sizes are available upon request - contact email@example.com for more information.