Sterilized Grain Bags

Explore GTG’s sterilized grain bags: whole-oat Core Spawn, oats-and-millet Dual Fuel, and oats, millet, and rye Triple Threat.

Available in 3 lb and 5 lb bags for lawful gourmet mushroom cultivation. All bags contain uninoculated grain; no spores, live cultures, or mycelium are included.

Ships within 3–5 business days. Delivery time is additional.

Grains today, glory tomorrow. Grow the Culture.