Rake the area smooth and remove any old mulch, rocks or debris that could poke a hole in your weed barrier.
Things You Will Need
Pull up any weeds that are already growing in the area you want to mulch. Use a trowel to help you remove the roots of the weeds, which will decrease how many try to grow back.
Black plastic weed barrier
Other than hand-pulling, mulch is probably the single most important means of weed control. However, mulch works best when used as part of a multi-pronged approach along with pre-emergent herbicides.
Getting Rid of Weed Growth in Mulch
Mulch acts as physical barrier against weeds, but it must block sunlight in order to be effective. If you notice weeds coming up in mulch, you may need to thicken the layer as blocking light generally requires at least 2 to 3 inches (5-7.6 cm.). Replenish mulch as it decomposes or blows away.
Manual Mulch Weed Control
If you haven’t applied mulch yet, landscape fabric or weed barrier cloth is a safe way to block weeds while still allowing water to pass through to the soil. Unfortunately, landscape fabric isn’t a perfect solution because some determined weeds will push through the fabric, and those weeds will be extremely difficult to pull.
You can also use landscape fabrics to control weeds under decks and in pathways (spread over the excavated soil base before you add gravel or sand). A 3×50-ft. roll of landscape fabric, such as the Typar shown below, costs about $10. The fabric is also available in 36-in. die-cut circles (about $3 each) for installing at the base of trees.
Spread Landscape fabric and cut it to fit around plants. Photo by Saxon Holt
Can I Put Landscape Fabric Over Weeds?
Photo by Saxon Holt
Denman & Co.
401 W. Chapman Ave.
Orange, CA 92866
True Temper Hardware
Camp Hill, PA 17011