Fully soluble formulation. A little goes a long way. This kelp is 100% Ascophyllum nodosum, and used in small doses as a foliar or soil nutrient. Biostimulant, and very diverse in the minor nutrients, this product often completes the nutrient package for your plants. Great for hardening off plants, thickening cell walls, and assisting with plant and root branching, flower set and more.