What is the main purpose of using mulch in ornamental gardens?

The main purpose of using mulch in ornamental gardens is to suppress weeds and retain moisture. Mulching creates a barrier that helps prevent light from reaching weed seeds in the soil, thus inhibiting their germination and growth. This reduces competition for nutrients and water between weeds and the desired plants, allowing the ornamental plants to thrive.

Additionally, mulch serves as a means to retain soil moisture by reducing evaporation from the soil surface, which is particularly beneficial during hot and dry conditions. By maintaining consistent moisture levels, mulch supports healthy plant growth and reduces the need for frequent watering.

While enhancing plant growth, attracting beneficial insects, and creating decorative patterns can be advantageous aspects of mulch, they are secondary benefits compared to the primary functions of weed suppression and moisture retention.