VermiKelp? is a microbial super food. Ascophyllum Nodusum has been used for centuries to nourish the microbes in soil, completing a process often overlooked?feeding the soil. VermiKelp? results in better root development through the stimulation of microbial activity; these microbes break down fertilizers, the result being increased nutrient availability. A highly renewable resource, VermiKelp? will bring out the deep green color of aquatic plants in your backyard or indoor garden.