3 lb Fully-Colonized Mushroom Grain Spawn – Ready to Expand & Fruit
Skip the waiting and jump straight into the most exciting stage of mushroom cultivation with our 3-pound bags of fully-colonized grain spawn. Each bag is bursting with vigorous, healthy mycelium — ready to be introduced to your bulk substrate for rapid growth and big yields.
Our grain spawn is produced in a sterile, professional lab environment using premium, food-grade grain and high-quality culture stock. By the time it reaches you, the grain is fully colonized, aromatic, and strong, giving you a powerful head start on your next flush.
Weight: 3 lbs of nutrient-rich grain spawn
Status: 100% colonized by vigorous mycelium
Packaging: Commercial-grade bag with 0.2-micron filter patch for gas exchange
Best For: Expanding into bulk substrates like coco coir, hardwood sawdust, or straw
Uses: Perfect for growing gourmet and medicinal mushrooms — oysters, lion’s mane, reishi, maitake, and more
Whether you’re cultivating for personal use, market sales, or research, our fully-colonized 3 lb grain spawn is the fastest way to go from bag to harvest with minimal effort and maximum results.
