Calcium Nitrate in Crystalline Powder Form is a fertilizer made up of two nutrients, with a white crystalline appearance that dissolves quickly in water and can be absorbed rapidly by plants. Calcium Nitrate builds up resistance to disease and pests. Calcium Nitrate facilitates the transformation of minerals in clay soil to a form more easily used by plants. Calcium Nitrate in Crystalline Powder Form contains no filler or additives.