Sterilize CVG Substrate Bag — 3 lbs — For Dung-Loving Mushrooms

3 lbs of sterilized CVG substrate in a professional filtered bag, ready to use with your colonized grain spawn.

This isn't basic CVG. This is our CVGA+ Max Yield formula — coco coir base supplemented with vermiculite, worm castings, gypsum, azomite, and corn flour. The worm castings provide nitrogen that mimics natural dung nutrition. The azomite delivers 70+ trace minerals. The corn flour supplies biotin for healthy cell development. Everything is pre-mixed, hydrated to field capacity, and sterilized at 15 PSI for 90 minutes. Open the bag, mix in your colonized grain, and fruit.

What's inside: 3 lbs hydrated, sterilized CVGA+ substrate (coco coir, vermiculite, worm castings, gypsum, azomite, corn flour)

Best for: Dung-loving species. Pairs with our 3 lb Rye Grain Spawn or Drippy Corn Spawn bags.

How to use: Spawn to substrate in a monotub, grow bag, or refill your reusable Shroomfolk Microbox container. Mix your fully colonized grain spawn into this substrate at a 1:1 ratio, pack into your fruiting vessel, and initiate fruiting conditions.

Sterilized — not pasteurized. Pressure cooked at 15 PSI for 90 minutes in a professional filtered bag. Sealed and sterile until you open it. Shelf life approximately 60 days when stored at room temperature out of direct sunlight.