12 x 1lb Sterilized Rye Berry Grain Bags — Ready Grain Substrate for Mushroom Growing (Liquid Culture or Spore Inoculation, Grain Spawn Production)

Package of 12 sterilized rye berry grain substrate bags, each weighing 1lb, prepared for direct use in mushroom cultivation. These pre-sterilized grain bags are suitable for inoculation with liquid culture or spores and are designed for producing grain spawn. They save time by removing the need for on-site sterilization and help lower contamination risk when handled with proper sterile technique. Ideal for growers who want consistent, ready-to-inoculate rye berry substrate for their spawn-making process.