This easy process produces multiple benefits.Mulch is not only good for your soil, it can also be good for the water table. If you use a two-inch layer of mulch wherever your landscape is not densely planted, you’ll add nutrients as well as help the soil retain moisture and resist compaction. This moderates soil temperature, limits erosion, reduces weeds, makes it easier to remove weeds that do grow, and minimizes the use of herbicides. A soil that retains moisture needs watering less often, conserving Maui’s water table.
What makes good mulch? All sorts of materials can be used, ranging from compost and grass clippings to wood chips and bark. It’s best to limit the use of bark mulch, though, and never to use it in areas that drain directly into storm sewers or open water. Bark produces a toxic leachate that should be kept from water supplies.
You’ll also want to place your mulch at least 24 inches from building foundations and at least six inches below the wood elements of buildings. Generally, mulch does not attract termites, but, just in case, don’t use mulch right next to your structure.
In partnership with the state’s energy office, the Maui Weekly provides this feature to help Valley Isle homeowners conserve and protect water resources.