Uncle Myc's CVG All-In-One Mushroom Spawn Bag

It's a single bag that combines a pre-sterilized grain spawn layer with a premium CVG (coco coir, vermiculite, and gypsum) substrate layer. This design lets you go straight from inoculation to fruiting without preparing or sterilizing your own substrate.

Use a syringe to inject spores or liquid culture through the self-healing injection port. The port reseals itself after injection, keeping the bag sterile and contaminant-free.

Every bag is sterilized in certified autoclaves before it ships, giving your culture a clean starting point. The integrated filter patch then maintains proper gas exchange throughout colonization while blocking contaminants from entering.

No. The CVG substrate layer is already portioned, balanced, and sterilized inside the bag. Once your grain spawn colonizes, the mycelium spreads directly into the substrate layer without any manual mixing.

The 4lb bag suits smaller grows, test batches, or first-time cultivators trying out a new species. The 7lb bag offers a larger substrate volume for growers looking to scale up yield without adding extra bags.

Yes. The all-in-one design removes the most error-prone steps in mushroom cultivation, including substrate sterilization and layering. It's built to give first-time growers a reliable, low-risk path to their first successful flush.