When it comes to plants and flowers, it’s all about the flowers and foliage. For lots and lots of big, beautiful, colourful blossoms, feed your plants with 15-30-15 Miracle-Gro Water Soluble Bloom Booster plant fertilizer. Promotes more blooms on both indoor and outdoor plants. Mixes easily with water. Starts to work instantly. To use, apply with a watering can around the base of the plant until the soil is soaked. For even more convenient feeding on your outdoor plants, use with the Miracle-Gro garden feeder and a garden hose.