Grow Supplies
Sterilized Grain Bags with Self-Healing Injection Port
Sterile millet-based bags with a self-healing injection port for repeatable, contamination-free inoculation. Ideal for all cultivators seeking fast colonization and high success rates in grain inoculation.
- • USDA Organic Certified · grown on our 70-acre Pennsylvania farm
- • Hand-packed for freshness · grower support included with every order
Made with a balanced blend of millet and sawdust, these pre-sterilized bags offer the ideal moisture ratio to support vigorous mycelial expansion. Each 6 lb unit includes a self-healing injection port and filter patch for easy, sterile inoculation — the self-healing silicone port seals automatically after each injection, allowing multiple inoculations without risking contamination. Optimized for use in clean environments between 70–78°F, this grain substrate supports a wide variety of mushroom species. It provides fast colonization and vigorous growth, making it suitable for home growers and large-scale cultivators alike. Each bag is sealed in front of flow hoods, wiped with hospital-grade sterilizers, and stretch-wrapped to prevent contamination or shipping damage. Simply inject your culture, shake gently, and wait for full colonization. Bulk and wholesale options available—discounts on pallet orders of 300 or more.
