Sulfate of Potash 0-0-51 — Greenhouse Grade Potassium Sulfate, 4 lb.

A versatile mid-size option for home growers, small commercial operations, and nutrient formulators. This greenhouse-grade sulfate of potash delivers professional-level potassium nutrition in a convenient 4 lb. jar — enough to run multiple reservoir fills or build custom nutrient blends without committing to bulk quantities.

Why Growers Choose This SOP

• 51% K₂O — high-concentration, nitrogen-free potassium for precise crop nutrition
• 18% sulfate-sulfur — immediately plant-available, no soil conversion needed
• Rapid, complete dissolution — 100 kg dissolves in 1,000 L of water in minutes at 20°C with no insoluble residue
• Low chloride, low salt index (46) — safe for salt-sensitive crops including tomatoes, peppers, cucumbers, and specialty crop
• Nitrogen-free — ideal for late-stage fruiting, ripening, and K-loading phases

Ideal Applications

Use in hydroponic reservoirs, drip fertigation, foliar programs, and custom nutrient blends. Particularly effective during flowering and fruiting when potassium demand peaks and nitrogen must remain controlled.

Documents

• Technical Data Sheet
• Safety Data Sheet
• CDFA Registration & Heavy Metals Report