Fight Weeds With Landscape Fabric (2024)

Laying down landscape fabric is the easiest and often the most effective method for fighting weeds. It prevents weed seeds from germinating in the soil or from landing and taking root from above the soil. And because landscape fabric is "breathable," it lets water, air, and some nutrients to flow down to the soil to feed desirable plants.

Fight Weeds With Landscape Fabric (1)

Landscape fabric works fine on its own, but it's usually best to cover it with a decorative mulch, rock, or other ground cover. The fabric separates the cover material from the soil, keeping stone and gravel clean and slowing the inevitable breakdown of organic mulch. Black plastic (another type of weed barrier) performs a similar function, but plastic is prone to tearing, and it forms an impervious barrier that prevents water and air from reaching desirable plants.

Installing landscape fabric isn't much harder than spreading out a bed sheet, but it's important to prepare the ground properly to ensure a flat surface and prevent damage to the fabric. It's also important to overlap and secure the edges of the fabric to prevent weeds and cover material from getting through the seams.

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Working With Landscape Fabrics

Landscape fabric is a weed barrier, but not all weed barriers are landscape fabric. Cheap, thin plastic barriers are far inferior to quality fabric and can tear very easily. It never pays to use the cheap stuff because you'll most likely need to replace it sooner or later. By contrast, quality landscape fabric is long-lastingand is resistant to sun damage and tears. Some products are guaranteed for up to 20 years.

Another benefit of quality fabric is that it's reusable. If you decide to change an area that is covered with fabric and mulch, simply remove the mulch, unpin the fabric, shake off the soil and other material, and roll up the fabric to keep it for future use. While it may be a little dirty, reused fabric works just as well as new material.

Most quality landscape fabric is made of spun synthetic-fiber material that blocks sunlight but permits the passage of some water and air. The material is tough, but it can be damaged by sharp rocks, tools, and roots. For this reason, it's a good idea to rake and smooth the ground before laying the fabric. Many fabrics are UV-protected but will last longer if they are not directly exposed to sunlight. A layer of mulch or other ground material provides this coverage.

How to Plan and Create a Landscape Planting Bed

What You'll Need

Equipment / Tools

  • Garden hoe
  • Steel rake
  • Utility knife
  • Hammer

Materials

  • Landscape fabric
  • Landscape fabric staples
  • Plants (optional)
  • Mulch or other ground cover (optional)

Instructions

Fight Weeds With Landscape Fabric (9)

  1. Remove All Vegetation

    Dig out all weeds, grass, and other vegetation, using a garden hoe, shovel, or other tool. Dig deep enough to get the roots; if you miss the roots, some plants can spread even when covered with landscape fabric. Use a hoe with a swinging motion, bringing the blade down towardthe ground and slightly back toward your body, striking the ground at approximately a 45-degree angle. Ideally, you'll penetrate the soil deeply enough to get under the roots and lift out the whole weed, roots and all.

    Alternatively, you can kill the plants with a non-selective, or broad-spectrum,herbicide (such as Roundup). Apply the herbicide as directed by the manufacturer, and allow time for the plants to die completely. Herbicide is often recommended for weeds that spread with rhizomesorstolons (surface runners), which can be difficult to eradicate with digging alone.

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  2. Clear and Level the Soil

    Rake the area thoroughly with a steel garden rake, also called a bow rake. Pull up any uprooted weeds and rake out all twigs, stones, and other sharp objects that could damage the landscape fabric. Discard the loosened rocks and debris as you rake until the soil surface is smooth and flat.

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  3. Lay the Landscape Fabric

    Roll out the landscape fabric so it is parallel to the long dimension of the area. Cut the material off of the roll, as needed, with a sharp utility knife (it helps to replace the blade frequently so it is always sharp). If desired, you can run the pieces long and trim them later; it's better to have too much fabric than too little.

    If you need more than one row of fabric, overlap the pieces by at least 6 inches. Fabric manufacturers may say 3 inches is enough, but 6 is better. If the fabric has different sides (such as one shiny and one dull side), be sure to install it with the proper side facing up, as directed. Temporarily weight down the fabric, if necessary, with stones or other heavy objects.

    Fight Weeds With Landscape Fabric (12)

  4. Secure the Fabric With Staples

    Confirm that the fabric is positioned properly, then secure it with landscape fabric staples, using a hammer or small hand maul. Drive a staple every 10 feet, or so, along the edges and seams and as needed over the interior areas (keep in mind that your ground cover, if you are using it, will help hold down the fabric). Trim the fabric along the edges, if needed.

    Fight Weeds With Landscape Fabric (13)

  5. Plant Through the Landscape Fabric (Optional)

    If you're adding plants in the area, make an X-shaped incision in the landscape fabric for each plant, using scissors or a utility knife. Cut from the outside toward the center, and make the incisionsjust big enough for digging a hole for the root ball of the plant. The fewer and smaller the holes you put in the fabricthe better.

    Pull the flaps aside to dig the hole, and dump the soil into a wheelbarrow or tub, rather than onto the surrounding fabric. Install the plant, back-fill around the root ball with soil, and lightlytamp the soil to eliminate air pockets. Lay the four flaps of fabric snugly against the base of the plant to cover the soil.

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    Tip

    Landscape fabric, while permeable, will likely limit the amount of moisture from rainfall or spray irrigation from reaching the soil below the fabric. When planting within fabric, keep a close eye your plants to make sure they are getting enough water.

  6. Add Mulch (Optional)

    Cover the landscape fabric with mulch or other ground cover, if desired. If using natural mulch, such as wood chips or pine needles, add no more than about 2 inches of the cover. If using stone, you may need less than 2 inches for full coverage, depending on the stone and the planned use of the area. Spread and smooth the ground cover with a rake, being careful not to damage the fabric.

    Fight Weeds With Landscape Fabric (15)

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Landscape Fabric Tips

Areas covered with landscape fabric need some maintenance to remain weed-free over time. Soil and dust that blows onto the top of the fabric can build up and eventually support the germination of weed seeds. Any organic mulch applied over the fabric inevitably breaks down into soil, creating fertile ground for weeds and grasses. When the area becomes choked with soil and debris, it's time to remove and clean or replace the ground cover.

Stone ground covers can be raked off and hosed down to remove accumulated dirt. Organic mulches must be replaced. For this reason, there's no sense in using a thick layer of organic mulch over landscape fabricbecause all mulch biodegrades and turns into soil; a thicker layer just means more soil that can harbor weeds as well as a higher replacement cost. And, because you have the landscape fabric to stop weeds from below, there's no benefit to having a thick layer of mulch on top, as you would use when trying to suppress weeds without fabric.

FAQ

  • Do you have to remove weeds before laying landscape fabric?

    Remove all weeds and undesirable vegetation before laying down the landscape fabric for the best results. Resilient weeds may push through the material and affect your landscaping if weeds are not removed.

  • How do you prevent weeds from growing through landscape fabric?

    Layer mulch or rocks on top to weigh down the landscape fabric, keeping it in place. The barriers prevent weed seeds from getting to the ground to root and deters weeds from achieving photosynthesis and further growth.

  • What are weed-barrier landscaping fabrics made of?

    The most common landscape fabric is spun or woven polyester or polypropylene. Plastic is also commonly used, although it doesn't allow water or nutrients to pass through to the plants. A more eco-friendly option is made of biodegradable linen or recycled materials.

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Fight Weeds With Landscape Fabric (2024)

FAQs

Fight Weeds With Landscape Fabric? ›

Yes, you can use landscape fabric to suppress weeds. It works by creating a barrier between the soil and the weed, preventing light and water from reaching the weed. Be sure to overlap the fabric and use a lot of pins to secure it in place. Additionally, you should remove existing weeds before installing the fabric.

Will putting landscape fabric over weeds kill them? ›

The landscape fabric will do a fantastic job of suffocating all the weeds underneath it, but not any that are on top of it.

How long does landscape fabric keep weeds out? ›

The fabric suppresses the weeds for a couple of years, but eventually, new weed seeds blow into the landscape bed. Or a few particularly tenacious weeds manage to grow right through the fabric.

Can plants still spread with landscape fabric? ›

Yes, they can. But, landscape fabric may constrict the growth of plants. Not all, but many perennial plants will be inhibited from growing larger over time, because they have no room to expand.

What is the best ground cover to choke out weeds? ›

' Here, we list eight of the best options to help rid weeds from your backyard.
  1. Ground Clover. (Image credit: Getty) ...
  2. Creeping Phlox. (Image credit: Getty) ...
  3. Creeping Juniper (Blue Rug) ...
  4. Stonecrop. ...
  5. Creeping Thyme. ...
  6. Irish Moss. ...
  7. Creeping Jenny.
May 19, 2023

Is there anything that kills weeds permanently? ›

Glyphosate is the strongest weed-killer chemical available for purchase by the general population. It kills everything it touches. Most homeowners don't need to use a product this strong. Many other chemicals are available that are less toxic, but they are targeted to specific weeds and are nearly as effective.

What are the disadvantages of landscape fabric? ›

Pros and Cons of Landscape Fabric
AspectProsCons
Environmental ImpactSome types are made from recycled materials.Often contains petroleum and other chemicals; not biodegradable.
AestheticsCan be covered with mulch for a neat appearance.Becomes unsightly over time as it frays and surfaces through mulch.
4 more rows
Apr 18, 2024

Is cardboard better than landscape fabric? ›

Cardboard weed barriers are a better option for vegetable gardens where crop rotation necessitates that the plants in the plot be moved around regularly to combat plant pathogens in the soil. Many larger vegetable plants also have deep roots that you would have to cut a landscaping fabric to allow for.

Do I need to remove grass before landscape fabric? ›

Cut your grass as short as possible. You can now lay your fabric over the grass and secure it by pulling it tight. Push staples into the fabric to make sure that it will stay put, and that there are no gaps in the fabric. Find gravel or rock to put over top of the fabric, as mulch would erode on the grass.

Why landscape fabric should be avoided in a garden? ›

Not only does landscape fabric do very little to prevent weed growth, but it can also make it much more difficult to remove and control weeds in your yard. Not only will weeds still be able to grow in your mulch, but stronger weeds have the ability to penetrate this “protective” layer and grow through it.

How do landscapers keep weeds out? ›

Some landscapers swear by periodically sprinkling salt over the area. Apply the salt liberally and spray the area down with water. You can also use a preemergent weed killer, as long as you apply it carefully, in accordance with the manufacturer's instructions.

What to do before putting down landscape fabric? ›

Step 1: Prepare the Soil

Landscape fabrics should be applied on bare soil so all weeds and other vegetation should be removed if necessary. If the area will be planted, mix in any desired fertilizers, compost, and other soil amendments.

Can plants root through landscape fabric? ›

In this process you may end up damaging the root systems of your landscape plants too, as tree, shrub, and perennial roots may also grow through the landscape fabric. Even if weeds are not an issue, landscape fabric seems to invariably become exposed.

Does water pass through landscape fabric? ›

There is, however, one key difference that makes landscape fabric more effective than plastic. Landscape fabric strategically contains small pores that allow water to reach plant roots. Plastic does not contain these pores, making it so that water can only make it through the plastic in the holes made for plants.

Is landscaping fabric worth it? ›

The bottom line: Landscape fabric is an effective, short-term weed control solution but has deleterious long-term effects on soil health.

Can you kill weeds by covering them? ›

Occultation uses opaque coverings instead of clear. Occultation takes longer. The plastic traps heat and moisture, which encourages seed germination and plant growth. By blocking access to water and heating up the soil, the process eventually kills the vegetation underneath.

What is the best way to keep weeds out of landscaping? ›

Use Mulching and Edging to Your Advantage

Another weed control tactic that won't harm your plants (in fact, it will help them) is mulching and edging your plant beds. Mulch can act as an effective weed suppressant by making it difficult for weeds to break through that added layer. Weeds won't have access to sunlight.

References

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