GAIA GREEN Soluble Seaweed Extract is made from 100% North Atlantic Kelp (Ascophyllum nodosum). This species of kelp is considered to be the finest agricultural seaweed in the world. It provides a great source for readily available potassium. Solubilized kelp may be applied to the soil, but is more efficient when used for foliar application. Our seaweed extract will benefit plants at any stage of development and promotes rapid plant growth.