Sulfate of Potash 0-0-51 — Greenhouse Grade Potassium Sulfate, 1 lb. 

Start your potassium program right with this greenhouse-grade sulfate of potash — one of the most trusted water-soluble potassium sulfate fertilizers in professional horticulture. This 1 lb. size is perfect for trialing in small hydroponic systems, bench-top nutrient formulations, or evaluating SOP before scaling up.

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