Soilmaster® granules of pure, inorganic material rapidly absorb and store water in thousands of little pores and capillaries, holding it in suspension for gradual release to thirsty roots. The granules have been kiln dried for superior absorbtivity and hardness. The hardness of the granules provides permanent stability and long-term effectiveness. Loose, porous soil structure created by Soilmaster increases air intake and circulation, and speeds up release of plant gases. Non-Compacting, non-decomposing granules keep soil loose, speed up water intake and drainage, and balance water retention. Roots spread more easily to reach water and nutrients strengthening plant support. Soilmaster's unique internal structure improves nature's plant soil chemistry. The unique clay granules of Soilmaster Soil Conditioner benefits both heavy clay soils and light sandy soils. In heavy clay soils, Soilmaster prevents compaction. It helps to open pores, allowing the passage of water and oxygen. In light sandy soils, Soilmaster granules hold the available moisture and nutrients and keep them from leaching out. A stable supply of oxygen, moisture and nutrients provides a healthy growing environment for plant life and encourages greater root development. Contact Pro's Choice