6 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn oyster family Start your cultivation journey with

Start your cultivation journey with our cold-weather Pearl Oyster (Pleurotus Ostreatus) plug spawn

Start growing the prestigious Grifola frondosa with our premium plug spawn

Break-and-shake on Day 3 and 7

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6 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn oyster family Start your cultivation journey withOur 1lb rye berry grain spawn bags are perfect for incubating mushroom mycelium. We use 100% certified organic rye berries perfectly hydrated to the right moisture levels. Our rye berries are supplemented with gypsum and calcium for optimal results. We use the thickest bags available, to ensure the sterility of the block. Inoculation instructions are included. Note: These bags are cheaper because they do not have injection ports. These are the bags we