OutGrow® Sterilized Rye Berry Mushroom Substrate — 25 x 1 lb Bags (25 lb) with Self‑Healing Injection Ports

Ready-to-use, fully hydrated and sterilized rye berry substrate supplied in twenty-five individual 1-pound bags (total 25 lb). Each bag features a self-healing injection port to reduce contamination during inoculation and a 5-micron filter patch to ensure proper gas exchange for healthy mycelium development. Formulated for compatibility with a wide range of gourmet mushroom species, this substrate is suitable for both beginners and experienced cultivators. Store in a cool, dry place for up to 4 months. Manufactured by OutGrow®, a trusted name in mushroom cultivation supplies.