This Blend is 60% Premium compost with 20% vermicompost and 20% aged mulch (9 months plus). This product is not as mature as the 80/20 blend and best used during the fall so that it can mature over the winter months. The compost provides needed nutrients, macro and micro. Also, it provides food for the soil in the form of available and stored organic matter. The vermicompost provide beneficial microbes and fungi that play an important role in soil health. The aged mulch provides improved soil texture and wood cellulose material which is recycled for future nutrient.