Encourages Greening and Growth: Darker Green Liquid Iron contains Nitrogen and Iron to help you achieve that dark green color. Nitrogen and Iron Formula: Darker Green Liquid Iron was developed to perk up lawn, deepen the green of your lawn, and enhance existing minerals in the soil for a vigorous lawn! Maintain Lawn & Treat Nutrient Deficiencies: Darker Green Liquid Iron is perfect for maintaining lawn vigor or treating lawns deficient in Iron. Chelated Micronutrients: Darker Green Liquid Iron Contains Water Soluble Chelated Micronutrients like Iron and Manganese to Carry Out Essential Plant Functions. Great For All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass. Application Rates for Lawn and Garden: Versatile Formula can be used on Turf Grass, Ornamentals, Young Plants, Flower Beds, Potting Soil, Young Trees, Garden and Hardy Plants. Used Commercially: Used by Farmers and Professionals on Agriculture and Turf Grass all around the world. Concentrated Solution: Great to enhance the deep green of your lawn, treat deficiencies or use on garden. Liquid Iron Blend: helps the plant move oxygen throughout the roots and other parts of the plant. Iron is essential to the plant’s production of chlorophyll. Proprietary Fertilizers Made in the USA: All Simple Lawn Solutions products are expertly manufactured with our proprietary manufacturing method, and proudly in the USA by a family-owned company. Darker Green Liquid Iron is a high quality Iron fertilizer intensified with Nitrogen, and Manganese. This enhanced booster is specifically designed to energize your turf and soil to its optimum nutrient levels for maximum vigor and color. Darker Green provides essential nutrients needed to darken the green of your lawn. Darker Green contains the purest, cleanest Nitrogen and micronutrients we can source. Our decades of research has resulted in formulas that are expertly manufactured with our proprietary manufacturing method, unlike any other product on the market. Nitrogen 0.75% is a major component of chlorophyll where plants get their green coloring. Nitrogen encourages vigorous growth for the development of a dense attractive lawn. Iron 6% helps the plant move oxygen throughout the roots and other parts of the plant. Iron is essential to the plant’s production of chlorophyll. Manganese 0.80% is an essential micronutrient that aids in the process of respiration and absorbing Nitrogen. Please note that if your lawn or plant's current iron levels are sufficient, adding an iron supplement will likely result in little to no visual response. This product is best to use when there is an iron deficiency or suspected iron deficiency or when iron levels are below sufficient.