Gypsum (Calcium Sulphate)

Gypsum (Calcium Sulphate) 500g - 1kg Resealable Bag

This bag of high-purity Gypsum (Calcium Sulphate) is an essential additive for mushroom cultivation, composting, and horticulture. Ideal for improving substrate structure and nutrient availability, gypsum helps support strong mycelial growth and balanced pH in your growing medium.

• 100% food-grade Calcium Sulphate (CaSO₄)
• Used in CVG substrate to buffer pH and enhance colonization
• Improves soil structure and nutrient absorption in gardening
• Helps prevent clumping and enhances aeration in mushroom substrates
• Supplied in eco-friendly, low-plastic packaging to reduce environmental impact
• 500g - 1kg resealable bag for clean, convenient use and long shelf life

Produced with sustainability in mind, this gypsum is a trusted choice for growers who care about their results—and the planet.