This product comes in a 50 lb. bag. For a more complete nutrition, Allganic® Potassium provides natural Potassium Sulfate, the only source of natural potassium without chlorine, complementing Allganic® Nitrogen to achieve high quality and nutrient balanced crops.This fertilizer complements the nutrient content of organic soil amendments. It contains 50% Potassium (K2O) and 18% Sulfur(S), both plant nutrients that enhance plant growth, yield and quality.(OMRI Listed).