CVGM Sterile Bulk Substrate

Our CVGM Sterile Bulk Substrate is a manure-enriched blend prepared for growers looking for a more biologically active substrate profile while maintaining clean preparation and reliable hydration.

Built on a foundation of coco coir, vermiculite, gypsum, and composted manure, this substrate is designed to provide strong moisture retention, balanced structure, and nutrient diversity across a wide range of mushroom cultivation projects.

Prepared with clean ingredients and sealed in high-quality grow bags, CVGM offers a dependable substrate option for monotubs, larger grows, and repeat cultivation workflows.

No gimmicks. No filler marketing. Just solid preparation from experienced cultivators.

Available Sizes

3lb – Standard Grow Bag

Perfect for:

• all-in-one workflows
• hobby growers
• 1 tub setups
• testing new genetics

10lb – Monotub Bulk Bag

Perfect for:

• monotubs
• larger grows
• production runs
• repeat growers

Features

• Manure-enriched substrate blend
• Coco coir, vermiculite, gypsum, and composted manure
• Properly hydrated and sterilized
• High-quality grow bags
• Balanced moisture retention
• Designed for reliable colonization and strong growth