Gypsum

A premium soil and substrate additive for improved structure and nutrient balance.

Our high-purity agricultural gypsum is a finely ground calcium sulfate dihydrate that enhances texture, drainage, and mineral availability in your growing medium. It’s widely used in horticulture and substrate preparation to buffer pH, reduce compaction, and provide essential calcium and sulfur—critical for healthy plant and microbial growth.

Specs:

• Composition: CaSO₄·2H₂O (Calcium Sulfate Dihydrate)

• Particle Size: Fine powder for easy mixing

• Purity: ≥95%

• pH: Neutral (6.5–7.5)

Features:

• Improves substrate structure and prevents clumping

• Provides bioavailable calcium and sulfur
  

• Supports nutrient uptake and microbial balance

• Inert, odorless, and long shelf life

🛠️ Usage Tip: Add 1–5% by volume to your base substrate mix (e.g., with coco coir and vermiculite) to enhance performance and buffering capacity.

Available in: 2lb, 5lb, 10lb bags
Need larger quantities? Message us for bulk pricing or custom orders.