ERTH FOOD® is a natural organic fertilizer compost with an NPK ratio of (1.5-.5-.5). Because it is an organic product, the nutrients are released slowly into the soil, which prevents leaching. The organic matter also reduces moisture loss, so plants need to be watered less often. For best results, blend ERTH FOOD® with your native soil at an approximate 35% inclusion rate. Or, if you are using it as a soil amendment, incorporate ERTH FOOD® into the top 6-8 inches of soil. Our bulk ERTH FOOD® is sold by the scoop. Each scoop weighs approximately .27 tons, and covers approximately .6 cubic yards.