A beautiful garden provides hours of pleasure; you can rest amongst the flowers and foliage or else work on creating your ideal space. One way to improve the landscape is with mulch. Read on to find out several benefits. 1. Saves Water and Keeps the Soil Warm Mulch helps to retain moistness in the soil by limiting water-loss from evaporation. Once water seeps through the mulch layer into the earth, the ground cover protects it from air exposure.