A protective cover placed over the soil to retain moisture, reduce erosion, provide nutrients, and suppress weed growth and seed germination. Mulching in gardens and landscaping mimics the leaf cover that is found on forest floors. Materials used as mulches vary and depends on a number of factors. The type of mulch used takes into consideration availability, cost, appearance, the effect it has on the soil – including chemical reactions and PH, durability, combustibility, rate of decomposition, how clean it is and some can contain weed seeds or other pathogens. Mulches come in two forms: Organic and Inorganic and can vary from yard trash and grass clippings to polyethylene films/chips that come in a variety of colors to meet your needs.