Mulch is material laid on top of soil. It can consists of various materials such as but not limited to leaves, bark, straw, wood chips, and grass clippings.
Mulch is typically used in gardens and landscapes to help conserve moisture, suppress weeds, improve the appearance of an area, regulate soil temperature, add nutrients to the soil, and protect plants from pests and diseases. Mulch is applied around the base of plants or over the entire surface of a garden bed, and it can be either organic or inorganic. Organic mulches, such as wood chips or leaves, break down over time and add nutrients to the soil as they decompose. Inorganic mulches, such as plastic or rubber, do not break down and do not add nutrients to the soil.