Mulch helps retain soil moisture by reducing evaporation, which means you’ll need to water less frequently. It also regulates soil temperature, keeping roots cooler in summer and warmer in winter. Additionally, mulch suppresses weed growth by blocking sunlight that weeds need to germinate, and it can improve soil structure as it decomposes, enriching the soil with organic matter. Furthermore, mulch adds a finished look to your garden, enhancing its visual appeal while providing practical benefits.