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.
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.
Getting Rid of Weed Growth in Mulch
To stop weeds in mulch with pre-emergent herbicides, begin by raking mulch off to the side, then hoe or pull any existing weeds. Apply the product, following manufacturer directions to the letter. Pay attention to the label, as some plants don’t tolerate certain types of pre-emergent herbicides.
Manual Mulch Weed Control
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.
The use of herbicides is one of the most efficient since it works better than hand removal and for longer. There are several ways you can do this.
The solution to this is to increase the amount of mulch on the bed. With mulch, the more you add on the bed the better since it provides better cover from the sun. You should do this each time the mulch rots or is blown away by the wind.
3. Cut off their heads
Weeds tend to grow just about anywhere there’s enough material to support their root system. That’s including in your mulch beds and flower beds. Some weeds can grow through mulch and become problematic to control. So, how can you get rid of weeds in mulch beds?
These are effective yet easy ways to eliminate weeds from your bed. Always check whether any products you’re using on your bed, garden or farm has any adverse effects on the plant or the user. This is most important with the use of chemicals some of which are heavy pollutants.
1. Remove weeds manually
The best way to get rid of weeds in mulch beds is to treat the soil with a pre-emergent herbicide first before mulching. This will prevent weeds from growing through the mulch. For existing weeds, cover them with landscaping fabric, uproot or kill them with organic herbicides.