A gardener about to pull a weed out from a flower bed.

By August 7, 2017Articles

A gardener about to pull a weed out from a flower bed.

By Mary H. Dyer, Master Naturalist and Master Gardener Weed control is one of the primary reasons for applying mulch, yet pesky weeds may persist, even through a carefully applied layer of bark chips or pine needles. This happens when weed seeds are buried in the soil or are distributed by birds or wind. What should you do if you’ve got weeds coming up in mulch in spite of your best intentions? Keep reading for a few helpful tips. Getting Rid of Weed Growth in Mulch Manual Mulch Weed Control 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. How to Kill Weeds in Mulch with

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