Miracle-Gro Shake 'n Feed All Purpose Plant Food has been specially formulated to help grow stronger, vibrant and more productive plants (versus unfed plants). It contains vital micronutrients, plus added natural ingredients, to nourish above and below the soil. It's formulated with kelp, earthworm castings, feather meal, and bone meal in an all-in-one particle to feed microbes in the soil. Microbes break down natural ingredients into nutrients that support root strength and development which increases water efficiency. You can use Miracle-Gro Shake 'n Feed All Purpose Plant Food anywhere: in ground and in containers for feeding up to 3 months. | Miracle Gro Shake 'n Feed All Purpose Plant Food 12-4-8 | Size 4.5 lb