Simple Lawn Solutions: 3-18-18 is an NPK Lawn Food. This blend increases the mobility of phosphates resulting in a highly responsive, efficient NPK. Designed to give your lawn root growth while providing key nutrients for a healthier, stronger lawn. Use to maintain lawn health or to treat nutrient deficiencies. Keep your lawn watered sufficiently to ensure nutrients are absorbed properly. The Features and benefits: Premium 3-18-18 Liquid Lawn Food, Enhances Root Development, Improves Movement of Food Throughout Turf, Encourages Hardiness and Strength, Helps to Build Stress Resistance, Great for Every Grass Type, Feed Grade Ingredients, Made & Manufactured in the USA, Used Commercially. Just like the Human Body your Lawn needs essential, Balanced Vitamins and Nutrients To Survive and Maintain Health. Read Below about Common Signs and Symptoms of Deficiencies. 3-18-18 Lawn Food is used to maintain Lawn Health or to Treat Lawn Nutrient Deficiencies. Symptoms of a Phosphorus Deficiency: Leaf Tip/Edges are Purple, Red, extremely dark green, Reduced Growth, Reduced Density, Poor Root Growth. Symptoms of a Potassium Deficiency:Yellowing may appear burnt, Welting Tips of Turf, Low tolerance to Heat/Cold, Prone to Stress & Disease.