Neptune"s Harvest Organic Kelp Meal (1-0-2) is dried and ground Rock Weed (Ascophyllum Nodosum), which grows in the cold clean waters along the New England coast, and is known as the best marine plant available for agriculture today. Kelp Meal 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. It is perfect to mix with the Neptune"s Harvest Crab Shell. Neptune"s Harvest Kelp Meal is OMRI Listed for organic use.