Which of the following best describes mulch?

Mulch is best described as a product applied to conserve moisture and aid in weed control. When mulch is spread across the surface of the soil, it serves several important functions in landscape management. One of its primary purposes is to retain soil moisture by reducing evaporation. This is particularly beneficial during dry periods, as mulch helps keep the soil consistently moist, which is vital for plant health.

Additionally, mulch acts as a barrier to suppress weed growth. By blocking sunlight from reaching the soil surface, it prevents weed seeds from germinating and establishing themselves, thereby reducing competition for nutrients and water between desired plants and weeds.

While it is true that some mulching materials can improve soil structure or add organic matter as they decompose, the core function of mulch is primarily focused on moisture conservation and weed suppression, making it an essential practice in landscaping and gardening.