All-purpose natural nutrient for organic use. 44 pound bag. Azomite is a natural product mined from an ancient mineral deposit that contains over 70 trace elements and minerals. It is used internationally as a re-mineralizer for plants. These elements have been reported to improve root systems, yields and general plant vigor. This product is OMRI listed and mined in the USA. Spreads easily on lawns, gardens and crops. Re-mineralizes soil for optimum growth. Improves root systems, yields and plant vigor. All purpose natural nutrient for organic use. For all soil types. Hydrated sodium calcium aluminosilicate (HSCAS) containing other minerals and trace elements. 0-0-0.2 fertilizer analysis. Guaranteed mineral analysis is 1.5% calcium and 0.5% magnesium.