does weeds grow through mulch

Cut small “X” shapes into the weed barrier if you want to plant new plants in the area before laying the mulch. Dig a hole in each “X” shape and place one plant inside each hole.

Spread a layer of black plastic weed barrier over the planting area. If you already have plants growing in the area, cut holes in the black plastic to fit over them.

Apply a 2- to 4-inch layer of organic mulch over the entire surface of the black plastic weed barrier. Spread the mulch over the edges of the weed barrier so the black plastic doesn’t show.

Weeds are the enemy of gardeners around the country. These pesky plants decrease the beauty of your yard and rob vital moisture and nutrients from your flowers, vegetables and lawn. Mulch helps minimize weeds but also retains more moisture and helps moderate the temperature of your soil. The trick to keeping weeds from growing through your mulch is to put a layer of weed barrier underneath.

Overlap the strips of black plastic weed barrier so weeds can’t sneak their way through the edges of the material.

Things You Will Need.

Rake the area smooth and remove any old mulch, rocks or debris that could poke a hole in your weed barrier.

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.

Use several layers of old newspaper in place of black plastic weed barrier if you want a more environmentally friendly way to reduce weed growth through your mulch. Lay the newspaper down and cover with a 2- to 4-inch layer of organic mulch. You’ll have to replace the newspaper and mulch more often, however, because the newspaper will biodegrade over time. Fabric weed barriers are another option, though they aren’t always as effective as plastic in preventing weeds from growing.

Don’t use clear plastic weed barriers because they aren’t as effective as black plastic. Clear plastic lets more sunlight in, which can encourage weed growth. Don’t use plastic weed barriers around trees and shrubs because it prevents their roots from getting adequate water.


Here are a few strategies for preventing weeds from popping up in your mulch:

We often find weed seeds in old or contaminated mulch. Seeds can also get distributed by birds or wind into new beds.

For flower beds and landscaping, we like a chipped or shredded bark mulch with a relatively coarse texture. It decomposes relatively slowly and doesn’t blow away so it can do its job and keep sunlight from reaching the soil. Inorganic mulch (like stones or gravel) does an excellent job of preventing weed growth. However, it doesn’t offer the soil-improving benefits of organic mulch.

Applying mulch every spring makes sense on several levels. It helps enrich the soil and helps retain moisture during the dry summer months. But the main reason most of us mulch is weed control. We faithfully lay down a couple of inches of mulch and cross our fingers that we’ve won the battle. But most of us aren’t so lucky: weeds almost always find a way to pop up, even in the most beautifully mulched landscaping. Why are weeds so hard to tame, and what can you do to stop them? Here are a few tips:

If weeds start popping up in mulch, we want to tackle them before they can seed and spread. If you’re pulling weeds by hand, make sure you get the whole weed, including the root. Applying a pre-emergent herbicide is also an option. One approach is a commercial weed-killer like Roundup, which contains the chemical glyphosate. Some gardeners prefer a more natural approach, using a mixture of vinegar, salt, and dish soap to kill weeds as they grow.

What’s the Best Mulch to Prevent Weeds?

We all know how tenacious weeds can be. They thrive on the very same things your garden does: sunlight, water, and nutrients in the soil. Weeds take pretty much any opportunity to grow and aren’t picky about where they take root. As plant-based mulch decomposes, it provides an attractive, nutrient-rich environment for weeds to take root.

As experienced gardeners know, fighting weeds is a never-ending battle. They seem to pop up no matter what you do. But there are proven strategies for preventing them, and mulch is one of the best tools available. Working with a professional for your landscaping needs, including mulch application, is the best way to make sure your weed control program works.

At Epling, our experienced team knows which type of mulch to use in different locations. We apply just the right amount for each job, both for weed control and curb appeal. We have herbicide use down to a science and know which kind to use, both before and after mulching. This spring, put the focus on spending time outdoors with family and let our pros at Epling take care of the weeds.

How Can I Prevent Weeds in My Mulch?

How Can I Kill Weeds in Mulch?

Basically, solarizing the soil refers to the act of heating the soil up to kill the weeds in their seed form. It takes a bit of time but it’s one of the most effective methods.

Killing weeds in a mulch beds is slightly different from doing the same in a larger area such as a garden for example. It’s both easier and harder at the same time given the smaller size and delicate nature of the bed respectively.

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.

Using pre-emergent herbicides.

As detailed above, pre-emergent herbicides kill weeds before they sprout. They work best when you apply them on the soil with a spray can then apply the mulch. If the weeds have already sprouted, you can apply this type of herbicides by first uprooting the weeds.

3. Cultivate only when necessary.

You can also just use your hands to uproot the weeds you see jutting out of the mulch. You have the option of waiting for them to appear above the mulch or removing the mulch, uprooting them then applying the mulch on the bed again.

Be careful with mulch since too much of it can actually be harmful to your plants. Don’t add so much of it that it prevents the primary plants from sprouting or inhibits the circulation of air. Add just enough to keep the sun out and the surface moist enough for germination.

Mulch works against weeds by blocking sunlight from reaching the surface of the soil. This doesn’t always work as sunlight can find its way through the layer of mulch leading to the growth of weeds. Given that weeds can grow in tougher conditions compared to normal plants, a little sunlight is all they need to sprout.

With this approach, there are two ways to do it:

It can be done in the following ways:

Weeds can grow through mulch since their seeds can be in the soil or be brought in the bed by birds. Given their toughness, they will force their way through most mulching materials such as pine needles or even bark chips. They could even start growing way before the main plants in the bed.

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.

With each preventive measure outlined here, you get closer to a weedless garden. However, weeds will always come up and your focus should be keeping them under control.

Knowing which plants are weeds goes a long way in dealing with them. Luckily, killing weeds in beds is quite easy since it can be done by simple methods such as hand removal using weed removers such as Fiskars Weed Puller, using herbicides, and others. As for the prevention, you can use a weed barrier cloth or a landscape fabric can do the trick.

You can remove softer weeds using your hands wearing gloves but for tougher weeds such as grown nutsedge, crabgrass, and shrubs, you might want to use a tool such as a stand-up weed puller.

How to kill weeds in mulch beds.

Weeds can grow through mulch no matter the precautions you could have taken when preparing the bed. Weed seeds can be in the soil, birds can bring them to the bed and you could have brought them in with the seeds of the main plants.

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?

Either method works well given the relatively small size of beds.

The downside to using weed barriers is that there are weeds that are notorious enough to grow through them. If this occurs, it’s usually a headache getting them out as they’d be intertwined with the cloth’s fabric.

In the cases where you can’t oil out the weeds or spray them with a herbicide or even use weed killers such as baking soda, you have the option of simply cutting off their heads. By this, it means as much of the top part as you can. This helps kill the weeds and stop their spread since you’ll be cutting off the leaves which supply the rest of the plant with nutrients. You’ll also be cutting off the ability of the plant to produce seeds and spread them out.

Hand removal of weeds.

To use this type of herbicide on weeds that have already germinated, you should first remove the mulch from the bed, uproot the sprouted weeds then apply the herbicides. After that, you apply mulch to the bed again making sure not to disturb the soil too much. Apply another spray of herbicides on the mulch for the best results.

1. Use Pre-emergent herbicides.

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 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.

This setup creates a lot of heat when the bed is hit by the sun’s rays. The heat created is usually enough to kill the weeds in their seed form.

The best methods to prevent weed growth in your mulch include the following:

Using post-emergent herbicides.

These are pieces of cloth that you simply put on the bed once you’ve seeded it. While preventing the growth of weeds, they’re porous enough to allow for the seeping if water to the soil below.

Note: While glyphosate can be used to kill weeds in mulch, you should be careful when applying it since it’s a broad-spectrum weed killer that will kill all broad-leaved plants. You should thus apply it on each individual weeds with a paintbrush making sure it doesn’t touch other plants. You may also use cardboards to protect the rest of the plants when applying it. Remove the cardboards only when the weeds are dry.

Pre-emergent herbicides work by killing weeds in a parcel of land before the primary plants sprout (emerge from the soil). It also kills weeds before they appear. You can’t thus use it directly on weeds that have already sprouted since they won’t die. It’s used to prevent the growth of weeds rather than kill them.