Miracle-Gro Shake 'n Feed Ultra Bloom is specially formulated to help your plants grow strong and vibrant, while promoting more blooms and spectacular colours versus unfed plants. Miracle-Gro Shake ‘n Feed Ultra Bloom Plant Food contains vital micronutrients, plus added organic ingredients, to nourish above and below the soil. Formulated with kelp, earthworm castings, feather meal and bone meal in an all-in-one particle to feed microbes in the soil. You can use it anywhere: in-ground and in containers as it provides feeding for up to 3 months.