12 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn straw substrate Indoor cultivation preferred

Indoor cultivation preferred

Agar Capsule - The ideal growing medium

These industrial strength components mean you will rebuild them less often

Excellent air exchange needed

Your mushroom block will be inoculated fresh by a trained mycologist right before it ships

12 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn straw substrate Indoor cultivation preferredOur 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