FOR USE ON: Use Garden Gypsum to help loosen heavy clay soil for better plant root growth. Also helps cure turf burns from Winter ice-milter salts and pet spotting CONTAINS: 100% All-natural mined gypsum with no fillers or additives. Pelletized for easy application WHEN / HOW TO USE: Use any time in growing season. Sprinkle on the surface of the soil or use a drop or broadcast spreader. FOR ORGANIC GARDENING: Garden Gypsum is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production MADE IN THE USA: Product of the Espoma Company. The leader in natural organics since 1929 Espoma garden gypsum is an all natural mineral that can help loosen clay soils, minimize salt damage to plants and help promote root growth.