Soil requires protection from the elements to prevent erosion and nutrient depletion. Grass or alternative turf solutions are typically the answer for most of the yard. Turf, however, often isn’t an option in other areas like around trees, plantings, home foundations, and on steep slopes and along wetlands. Rock or wood mulch are the answers for these spots and it’s important to know when to use which one.
Rock Mulch
Rock mulch is available in various sizes and types, suitable for different applications. Rock is a good solution for placing on solid black plastic sheeting near foundations to secure the plastic and divert water away. It’s also effective on top of landscape fabric in high-flow water areas, serving as armor to prevent erosion and protect landscaping like swales or rain garden overflows.
Rock mulch is easier to maintain than wood mulch because it doesn’t decompose. It does need to be cleaned out periodically to remove organic material, prevent unwanted germination, and ensure longevity. Cleaning is easily accomplished with a battery-operated blower or rake.
Wood Mulch
Wood mulch is a better alternative to protect soil and plantings. It also offers a softer aesthetic. Its advantages include suppressing weeds, retaining moisture in the soil, and fostering a cool environment for plant roots. Although it’s effective at holding soil in place to prevent erosion it may wash away more easily than rock mulch, making it less suitable for high-flow water areas.
Wood mulch does require seasonal turning to aid in its breakdown and maintain a fresh appearance. Turning involves simply flipping or stirring it with a rake, fork, or shovel.
Both rock and wood mulch, when used appropriately, create microclimates that encourage healthy soil and plants. This prevents erosion and maintains soil moisture in the areas of your yard where grass doesn’t thrive.
