| Basic Information about CompostA compost is an organic material that could be used as amendment for soil or even replace it in some cases. When a compost matures, it is then called humus, has a dark brown or black color with earth-link smell.~~These organic materials is made by combining different organic wastes in proper proportions and adding bulking agents such as wood chips, wood carvings, or saw dusts. Learn more about Composting, how to create one, and how to use and can help you More details of the full article on EPA's website, link below. Link: Basic Information | Composting | US EPA |