1 Pound Sterilized Rye Berries - Grain Spawn Organic
1 Pound Sterilized Grain Bag
Sterilized and prepared mushroom grain spawn substrate in a gusseted autoclave bag with filter patch. Forest Organics sterilized grain is composed of 100% USDA certified organic rye berries which is widely regarded as the highest quality grain for spawn production and is the industry standard for mushroom cultivation. The substrate is free of any additives or chemicals and is recommended for use with our liquid culture syringes LCs which also can be purchased on Ebay.
Once colonized with mushroom mycelium, we recommend using the colonized grain spawn to inoculate bulk substrate, The colonized grain spawn can be transferred to more sterilized grains to promote further propagation of the mushroom mycelium (also known as a grain to grain transfer).
We prepare our organic rye berry grain spawn by thoroughly rinsing the grains, then soaking them for 24 hours in purified water bath to ensure optimal moisture levels. Immediately after the soak, the rye is simmered for 30 minutes. The rye berries are then sterilized at 15 PSI in a lab-grade autoclave for a complete 120 minutes.
Our grain spawn comes heat-sealed in sterile, filter-patch mycobags and can be stored at room temperature for up to 14 days before use.