Used by professionals everywhere, Espoma Holly-tone 4-3-4 has been specifically formulated for acid-loving plants. A complex blend of 100% natural organics provide complete and balanced feeding with a long-lasting, slow release. Holly-tone is the leading choices for hollies, azaleas, evergreens and rhododendron. Established acid-loving plants should be fed twice yearly, spring and late fall. Sprinkle Holly-tone around like adding salt and pepper to food.