Gypsum – 500 grams

Gypsum (Calcium Sulfate Dihydrate)

500 Gram Bag

Gypsum is an essential additive for mushroom cultivation, valued for its ability to improve substrate structure, buffer pH, and provide calcium and sulfur to support healthy fungal growth. This fine, food-grade powder is a versatile ingredient commonly mixed into grain spawn and bulk substrates to enhance texture and reduce clumping.

Ideal for a variety of growing setups, gypsum promotes even colonization and creates optimal conditions for thriving mycelium. Whether you’re preparing sterilized grains, enriching bulk substrates, or balancing a casing layer, gypsum is a reliable choice for consistent and productive harvests.

Available in bulk for growers of all scales, this high-quality gypsum is an essential addition to any mushroom cultivation toolkit.

Optional Horse Manure Enrichment: Upgrade your substrate for added nutrients that support faster colonization and robust fruiting. Choose “Horse Manure Enriched” above.