Mulches are applied in landscaping beds to boost the aesthetic appearance of the landscape. The thick mulch layer also assists in holding moisture within the soil. Mulch keeps plant roots cool during the hot part of the summer and warm during the coldest parts of the winter. In addition, mulch around a tree or shrub seems to be a visible barrier for the weedeater operator who wants to get as close as possible to trees and shrubs.
There is an extensive variety of mulches to choose from.