Southern Ag Chelated General Purpose Flower & Garden Nutritional Spray is derived from Magnesium Lignin Sulfate Chelate, Magnesium Sulfate, Manganese Lignin Sulfate Chelate, Manganese Sulfate, Copper Lignin Sulfate Chelate, Copper Sulfate, Zinc Lignin Sulfate Chelate, Zinc Sulfate, Ferrous Lignin Sulfate Chelate and Ferrous Sulfate. The chelating agent in this formula is Lignin Sulfate. It was strategically and carefully combined to treat, prevent, and control minor element deficiencies and other deficiencies that may cause yellowing of foliage. This plant food provides the minor elements essential to the healthy growth of turfgrass, flowers, and vegetables. It can be used at the first signs of the deficiency symptoms.