6 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
Our 1 pound rye berry grain spawn sacks are ideal for growing mushroom mycelium. We utilize 100% certified organic rye berries that have been thoroughly hydrated to the appropriate moisture levels. For best results, our rye berries are fortified with gypsum and calcium. To preserve the sterility of the block, we employ the thickest sacks possible. Instructions for immunization are supplied.
Note: These bags are cheaper because they do not have injection ports. These are the bags we use, because injection ports are not needed, See our video about this here: