Ironite Plus Lawn & Garden Spray works by helping to replace essential micronutrients and trace elements into the soil. Its unique formula contains 40% rapid release which aids in quick greening and 60% slow release that helps to build strong root systems. Ironite Plus can be used on lawns, fruit and vegetable gardens, trees, shrubs, flowers, trees, and flower gardens. It’s easy to use – simply attach the nozzle to any garden hose and you’re ready to go! This unique fertilizer is absorbed into plants through both their foliage and their root systems, so it begins to work quickly.