Humus (Latin - "soil ") is the organic material in soil lending it a dark brown or black colouration. In soil science, humus refers to any organic matter which has reached a point of stability, where it'll break down no further and might, if conditions don't change, remain essentially as it's for centuries, if not millennia. In agriculture, humus is sometimes also used to describe mature compost, or natural compost extracted from a forest or other spontaneous source for use to amend soil. It… (More on Humus)