Potting medium is a material used to grow plants in containers. It typically consists of a combination of PEAT and SOIL, which are both common components of potting medium. PEAT is a type of SOIL composed of partially decomposed organic matter, such as mosses and other plant material. SOIL is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Together, PEAT and SOIL provide the necessary nutrients and moisture for plants to thrive in a container environment.