3lb CVG + Wc (Coco Coir Vermiculite Gypsum + Worm Castings) Pasteurized Bulk Substrate

Premium CVG with Worm Castings Bulk Substrate for High-Yield Mushroom Cultivation

Supercharge your mushroom harvest with our professional-grade CVG bulk substrate. Formulated with a precise blend of coco coir, vermiculite, gypsum and worm castings, this mix provides the ideal structural foundation and hydration needed for aggressive mycelial growth and massive flushes.

• Superior Hydration & Aeration: High-quality coco coir acts as the primary moisture reservoir, while vermiculite prevents compaction and ensures vital air pockets for mycelium to breathe.

• pH Balanced for Success: Added gypsum provides essential calcium and sulfur while stabilizing pH levels, creating a resilient environment that helps prevent common molds and bacteria.

• Contamination Resistant: Unlike nutrient-heavy manure mixes, CVG is naturally low in the "easy" nutrients that contaminants love, giving your mushroom cultures a significant head start.

• Universal Compatibility: The ultimate choice for monotubs and shoebox grows, our CVG is perfect for dung-loving species and can even be used for aggressive gourmet varieties like Blue Oysters and Lion's Mane.

Ready to use right out of the bag. Just mix with your colonized grain spawn and watch your mushrooms thrive.

Lowest contamination risk; best moisture control.

Contains:

●Pre-washed, buffered RHP-certified coco coir (base substrate)

●Horticultural-grade vermiculite for moisture retention

●OMRI-listed gypsum for mineral balance and structure

●OMRI-listed worm castings to provide gentle organic nutrition for dung-loving species

Packaged in a Unicorn Type 3T bag with a 0.2 micron filter patch to allow proper gas exchange while minimizing contamination risk.

Recommended use:

Mix 1 fully colonized 3lb grain spawn bag with 2 or 3 CVG substrate bags for optimal results.

• Field Capacity is Key: If preparing your own from dry ingredients, always perform the "squeeze test"—the substrate should only release a few drops of water when squeezed firmly.

• Layering Technique: For best results in a monotub, aim for a 2:1 ratio (two parts CVG to one part grain spawn) to ensure rapid, total colonization.

• Casing Layers: You can use a thin 1/2 inch layer of pure CVG as a "casing" to maintain surface humidity during the pinning stage.