Potassium Sulphate

Potassium Sulphate – Sulphate of Potash

Potassium Sulphate is a high-quality, water-soluble source of potassium and sulphur, essential for healthy plant growth, strong cell development and improved fruit and flower quality. Unlike potassium chloride, Potassium Sulphate is low in chloride, making it suitable for sensitive crops and living soil systems.

Our unique source of Potassium Sulphate is made from crude salt of natural origin and is permitted for use in organic farming according to the Regulations (EU) 2018/848 and (EU) 2021/1165.

Benefits of Potassium Sulphate for Your Garden

• Boosts Flowering and Fruiting: Supplies readily available potassium to enhance flowering, fruit set and overall crop quality.
• Supports Strong Growth: Potassium strengthens plant tissues, improving resistance to stress and disease.
• Adds Sulphur: Provides essential sulphur for amino acid and protein formation, supporting vigorous growth.

Additional Advantages

• 100% soluble and easy to apply
• Suitable for soil, hydroponic, and foliar use
• Compatible with biological systems
  
  

Application Rates

• Soil Mix: Add 0.25–0.5g per litre of soil
• Top Dressing: Apply 0.125–0.25g per litre of amendable soil volume
• Watering In: Use 0.25–0.5g per litre of water. Use 1-2L per plant. 
• Foliar Spray: Apply 2-4g per litre of water; spray lightly to avoid runoff

For best results, amendments should be applied after a soil test. Contact us if you need advice.

Typical Composition

• Potassium (K₂O): 52.5% (43.6% total K)
• Sulphur (S): 18%
• Chloride (Cl): 0.15%