Water soluble. For all flowers, vegetables, trees, shrubs, houseplants. For use with watering can. America's favorite plant food! When you use Miracle-Gro Plant Food, you join generations of gardeners who know how easy it is to have spectacular blooms, lush foliage, and lots of fresh home-grown vegetables. Miracle-Gro Plant Food is so effective because: Double feeding actions - feeds through both the roots and the leaves. Safe for all plants - guaranteed not to burn when used as directed. Starts to work instantly - promotes quick, beautiful results. The quick, easy way to a beautiful garden! For feeding larger garden areas, try the Miracle-Gro Garden Feeder. In one easy step, you can give your plants two of the most important requirements they need to reach their maximum growth potential, food and water. Easy: Simply pour 1 entire feeder refill packet into feeder jar. No mixing or measuring required - the feeder is designed to dispense just the right amount of food as you water. Quick: Depending upon your water pressure 1 feeder refill packet will feed 500 sq. ft. in just 12 to 15 minutes. Versatile: 4 Different spray patterns for all of your watering needs. Miracle-Gro Plant Food is great for use on: all flowers, all vegetables, houseplants, lawns, roses, all trees & shrubs.