It is dried and ground Rock Weed (Ascophyllum Nodosum). It is full of trace Minerals, Carbohydrates and Amino Acids, which help create a strong root systems and makes a very healthy plant. It should be tilled in the soil before planting or can be top dressed, incorporated into potting soils, seed beds and composting material. It will add organic matter to your soil and help it retain moisture. Kelp Meal will keep your lawn healthy and green, and shows great results on all plants.