99.8% Pure Potassium Nitrate Powder (Saltpeter) Potassium nitrate is used in a variation of ways, but mostly seen in fertilizers and the removal of tree stumps. Produces wonderful nourishments for plants and promotes healthy and efficient plant growth as well. Providing nutrients is a vital part of the metabolic process in the plant's cell that acts as a water management source for the plant, ensuring a healthy style of living.Characteristic Ratings Colorless and Odorless Water-soluble and chloride free Protect chloride sensitive crops (strawberries, lettuce, beans, etc.) Produce Fertilizer Blends Greenhouse Grade