Miracle Gro ericaceous is a fertilizer suitable for acid-loving or lime-hating plants. It helps to grow plants twice as big as those that are unfed. Regular use can result in beautiful, healthy plants with more blooms. To use, simply dissolve the fertilizer in water and apply using a watering can or a Miracle-Gro hose-end feeder. For best results, feed every two weeks from March to September.