Uncle Myc's | CVG Supplemented Bulk Substrate 4lbs

CVG is a classic bulk substrate of coco coir, vermiculite and gypsum. Uncle Myc's sterilizes it in certified autoclaves (rather than only pasteurizing it) and packs it at a set moisture level, so the 4 lb bag is ready when your grain spawn is.

Open it and mix in fully colonized spawn, with no prep of your own. The maker says it works with all gourmet and medicinal species.

Pairs with: Uncle Myc's Rye Berry Grain Sterilized Mushroom Spawn Bag 2 lb, Uncle Myc's Rye Berry Grain Sterilized Mushroom Spawn Bag 4 lb.