Mulch is a layer of material that is placed on top of the soil in a garden or landscaped area. It is typically made from organic materials such as bark, leaves, or straw, although it can also be made from inorganic materials like plastic or rubber. Mulch serves several purposes, including helping to conserve moisture in the soil, suppressing weeds, and improving the overall appearance of the garden. It can also help to regulate soil temperature and provide nutrients to the plants as it breaks down over time. Using mulch in the garden can help to improve the health of plants and improve the overall look of the landscape.