what is humus in soil
Humus is inactive organic material, usually decomposed plants. Most soil has humus in varying amounts, which gives it the distinctive dark brown color. Humus is complex and is made up of a variety of substances that have decomposed to the point of being impossible to identify.Humus makes garden soil rich and provides nutrients to growing plants.umus is complex and is made up of a variety of substances that have decomposed to the point of being impossible to identify. Humus makes garden soil rich and provides nutrients to growing plants.