Sterilized Grain Bags

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 an injection port and filter patch for easy, sterile inoculation.

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.