Autoclavable · Filter Patch · 3 Sizes
Mushroom Grow Bags
Heavy-duty polypropylene bags with 0.5 micron filter patches. Autoclavable, tear-resistant, and sized for grain spawn, substrate blocks, and full fruiting.
Made for Canadian Growers
All Grow Bags
Available in medium, large, and extra-large sizes. All bags are autoclavable at 15 PSI and feature integrated filter patches for gas exchange during colonization.
Choosing the Right Grow Bag Size
Medium (5" x 5" x 20") — Ideal for grain spawn production. Holds 3-5 lbs of grain. The narrow profile colonizes faster and fits inside most pressure cookers.
Large (8" x 5" x 18") — The workhorse bag for most growers. Holds 5-8 lbs of supplemented hardwood substrate. Works for fruiting blocks, masters mix, and straw.
Extra-Large (8" x 5.5" x 25") — Built for commercial operations. Holds 10+ lbs of substrate for maximum yield per block.