Maine Cap N Stem is now a Certified Organic producer of Mushroom Grain Spawn. Our spawn is a combination of organic hard wheat and millet, sterilized in our state-of-the-art sub-atmospheric vacuum sterilization system, accurately producing large batches of grain spawn in a speed-cycle which eliminates caramelization and maillard reactions, which in a traditional gravity sterilization cycles can make it very difficult for the mushroom mycelium to colonize the grain quickly and efficiently before being transferred to a suitable fruiting substrate. Our spawn will colonize your substrate faster for healthier mycelial growth and faster fruit body development. All of our cultures are cryogenically stored in deep freezers for the proper preservation of strain longevity and vigor. Each master bag is produced from a single plate of agar and each master bag inoculates a series of G2 spawn bags. We do not expand our mycelium past that on grain in order to keep the strains running strong and fast for our substrate and ours.