Our 3 lb sterilized mushroom substrate bag is crafted with coco coir, vermiculite, gypsum, and agricultural lime, and arrives ready for inoculation. The balanced formulation provides excellent moisture retention and aeration to support healthy mycelial colonization, while pH-buffering agents help reduce the risk of contamination.

Highlights

• Pre-mixed and sterilized - ready to use
• Made with coco-coir, vermiculite, gypsum, and agricultural lime
• Excellent moisture retention and air exchange
• pH balance helps resist contamination
• Suitable for beginner and experienced growers alike
• Also available in 5 lb size

Quantity Prices

• 1–4: $14.95 each
• 5–9: $13.95 each
• 10–29: $12.95 each
• 30+: $11.95 each

Discount automatically applies at checkout