Mulch is the best weed prevention technique. It smothers emerging weed seeds as they germinate and makes it easier to pull out those that persevere through the mulch layer. If a plant is susceptible to a soil-borne disease, mulching around its base will keep disease-bearing soil from splashing up onto leaves during rain and watering. It keeps the soil’s surface temperature down, which is especially important in areas with long, hot summers when roots near the surface will wither and die in the heat. Mulch helps keep the top of the soil from crusting over and taking on cement-like characteristics. It gives a garden an attractive, more professional look. Bark, sawdust, compost, and straw are types of mulch. Consult our nursery professionals on the best mulch choice and application thickness for the type of garden you wish to mulch.