What is the primary function of mulch in landscaping?

The primary function of mulch in landscaping is to retain soil moisture and suppress weeds. Mulch acts as a barrier on top of the soil, which helps to reduce evaporation, keeping the soil moist for a longer period of time. This is particularly important in landscaping, where plants often require consistent moisture to thrive.

Additionally, mulch serves to inhibit the growth of weeds by blocking sunlight from reaching the soil, thus preventing weed seeds from germinating and establishing themselves. This not only helps to maintain the aesthetic appeal of the landscape but also reduces competition for nutrients and water between the desired plants and weeds.

While enhancing plant color and growth, preventing soil erosion, and adding nutrients to the soil are all beneficial aspects of mulch, they are not its primary functions. The primary benefits of moisture retention and weed suppression make mulch a critical component in effective landscaping practices.