Fleur de Fungi – CVG Mushroom Substrate Grow Bag (2kg)

Our 2kg pre-sterilized CVG (Coco Coir, Vermiculite & Gypsum) Substrate Bag is a reliable, ready-to-use option for mushroom cultivation. Carefully prepared and hydrated to field capacity, this bulk substrate provides the perfect balance of aeration, water retention, and mineral supplementation to support healthy mycelium growth and bountiful flushes.

• Coco Coir – Excellent water retention to keep mushrooms hydrated (mushrooms are ~90% water).
• Vermiculite – Improves aeration and structure while holding additional moisture.
• Gypsum – Provides calcium and sulfur for strong, healthy mycelium and helps prevent substrate compaction.
• Sterilized & Sealed – Minimizes contamination risk and saves you time in preparation.

How to Use:

• Best results with grain spawn (e.g., rye or millet). Mix at least 15% grain spawn into the bag and allow it to colonize.
• Incubate in a clean, still-air environment. Most species thrive at 22–24°C, though ideal conditions may vary slightly depending on mushroom type.
• Avoid extreme temperatures: prolonged cold (<18°C) slows colonization, while high heat (>30°C) can damage or kill mycelium.
• Use promptly for best results (ideally within 6 weeks to prevent moisture loss).

This CVG substrate is one of the most trusted bulk substrates for mushroom cultivation, making it a great choice for both beginners and experienced growers. Proudly prepared by Fleur de Fungi on the Sunshine Coast.