0-0-21.5 Potassium Magnesium Sulfate Potassium Magnesium Sulfate 0-0-21.5 Enhanced Nutrient Absorption: KMS delivers water-soluble magnesium, sulfur, and potassium, ensuring immediate availability to your plants. Perfect for low-magnesium soils prone to nutrient loss. KMS delivers water-soluble magnesium, sulfur, and potassium, ensuring immediate availability to your plants. Perfect for low-magnesium soils prone to nutrient loss. Suitable for All Crop Types: Used for micro-jet, drip, foliar, hydroponic, and greenhouse applications. Provides 21% potassium, 11% magnesium, and 22% sulfur, supporting robust plant growth and development. pH Neutral: Neutral pH upon soil application. Potassium Magnesium Sulfate 0-0-21.5 Enhanced Nutrient Absorption: KMS delivers water-soluble magnesium, sulfur, and potassium, ensuring immediate availability to your plants. Perfect for low-magnesium soils prone to nutrient loss.