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How to Kill Pampas Grass: The Definitive Guide

How to Kill Pampas Grass?

Pampas grass is a beautiful, but pesky, weed that can be difficult to get rid of. If you are having trouble getting rid of your pampas grass, don’t worry! This definitive guide will teach you how to kill pampas grass for good. We will cover everything from common methods to more specialized techniques. So read on and learn how to eliminate this weed once and for all!

What is Pampas Grass?

Pampas grass is a common name for several species of tall grass that are found in temperate regions around the world. The most common species are Cortaderia selloana and C. jubata, which are native to South America. Pampas grass is an invasive species in many parts of the world, including North America, Europe, Australia, and New Zealand.

The plant also produces large amounts of pollen, which can cause allergies in some people. Pampas grass is most commonly found in open areas like fields and roadside ditches.

What is Pampas Grass?

Pampas grass is considered a weed because it spreads quickly and aggressively. This plant can crowd out native vegetation, changing the local ecosystem. Pampas grass is also a fire hazard; the dried leaves and stems are highly flammable, and the plant often grows in areas that are prone to wildfires.

In addition to being a nuisance, pampas grass is also dangerous to humans and animals.

Plant characteristics

Pampas grass is a perennial tussock grass that forms large, dense clumps. The leaves are long and narrow with sharp tips, and the stems can grow up to 15 feet tall. The flowers are white or pink, and they bloom in late summer or early fall. [1]

Pampas grass is native to South America, but it has been introduced to many other parts of the world. It is a popular landscaping plant because of its showy flowers and ability to tolerate drought. However, pampas grass can be invasive in some areas, particularly if it is not properly maintained.


Pampas grass is a highly invasive plant, and as such, it is difficult to get rid of once it has taken root. The best way to avoid having to deal with this problem in the first place is to prevent it from spreading in the first place.

One way to do this is by ensuring that any pampas grass plants you have on your property are properly contained. This means either keeping them in pots or planting them in an area where they will not be able to spread their roots.

If you live in an area where pampas grass is prevalent, it is also important to take measures to prevent its seeds from blowing onto your property. One way to do this is by regularly mowing your lawn and keeping it free of debris.

Why You Should Get Rid Of Pampas Grass

Pampas grass is an extremely invasive species. It can crowd out native plants, change local ecosystems, and is difficult to control once it has taken over an area. Getting rid of pampas grass is important for the health of your local environment.

There are a few different methods you can use to kill pampas grass. The most effective method will depend on the size and location of the infestation.

Why You Should Get Rid Of Pampas Grass

Small infestations can be controlled by pulling up the plants by hand or using a weed whacker to cut them down. Larger infestations may require the use of herbicides.

Herbicides are chemicals that kill plants. They come in two types: contact and systemic. Contact herbicides kill the plants they come in contact with but do not spread through the plant. Systemic herbicides are taken up by the plant and spread throughout its system, killing it from the inside out.

Systemic herbicides are more effective at killing pampas grass, but they can also be more harmful to the environment. Contact herbicides may require more applications to be effective, but they pose a lower risk to non-targeted plants and animals.

Things You Would Need

There are a few things you should need to begin getting rid of pampas grass. First, you need to identify the plant. Pampas grass is a perennial that grows in clumps and can get up to 12 feet tall.

Gloves and Protective Clothing

You will need to wear gloves and protective clothing when dealing with pampas grass. The plant contains silica, which can cause skin irritation.

Wearing gloves will protect your hands from the sharp blades of the plant. Long sleeves and pants will protect your arms and legs from the plant’s razor-sharp leaves.

You should also wear eye protection to safeguard your eyes from the plant’s pollen.

Scissors or pruners

You will need a sharp pair of scissors or pruners to cut the pampas grass. Make sure the blades are clean and sterilized before cutting the plant.

Scissors or pruners

Pruners are a better option if you have a lot of pampas grass to remove. The long handles will give you more leverage, and the serrated blades will make it easier to cut through the tough leaves of the plant.


You will need to wear a mask to avoid inhaling the plant’s pollen. The plant produces a lot of pollen, and if you are allergic to it, you could have a reaction.

Wearing a mask will also protect you from the plant’s silica dust. Inhaling silica can cause lung irritation and damage.

The best way to avoid these problems is to wear a mask that covers your nose and mouth when dealing with pampas grass.


You will need to use chemicals to kill the pampas grass. Roundup is a popular herbicide that contains glyphosate, which is effective at killing weeds.

You can also use a mixture of vinegar and water to kill the plant. The vinegar will act as acetic acid and will burn the leaves of the plant.

Make sure you read the labels of any chemicals you use and follow the directions carefully. Improper use of these products can be dangerous.

Gardening tools

You will need to use some gardening tools to remove the pampas grass. A shovel or spade will be helpful for digging up the roots.

A hoe can also be used to loosen the soil around the plant. This will make it easier to dig up the roots.

Once you have removed the plant, you can use a rake to clean up any remaining debris.


To destroy pampas grass, you can use salt. Salt is a natural herbicide, and it will kill the plant quickly.

Make sure you use enough salt to completely cover the leaves of the plant. You can also add salt to the soil around the plant to prevent it from growing back.


Once you have applied the salt, you should water it well. This will help to ensure that the salt does not evaporate before it has a chance to work.

Thick tarp

You will need to use a thick tarp to kill the pampas grass. The tarp will block out the sunlight and prevent the plant from photosynthesizing.

This will cause the plant to die within a few days. Once the plant has died, you can remove the tarp and dispose of it.

Make sure you seal any holes in the tarp so that no light can get through. You can also weight down the edges of the tarp with rocks or bricks to keep it in place.

How To Kill Pampas Grass

You can use herbicides, manual removal, or burning. We’ll go over each method in detail so you can decide which one is right for you.

Herbicides are the most common way for killing pampas grass. There are a few different types of herbicides that can be effective, but glyphosate is the most popular choice. Glyphosate is a broad-spectrum herbicide, which means it kills any plant it comes in contact with. That’s why it’s so important to be careful when using glyphosate. You don’t want to accidentally kill other plants that you don’t want to get rid of!

Get Rid of it With Herbicide

The best way to kill pampas grass is with herbicide. You can either use a pre-emergent herbicide, which will prevent the grass from growing in the first place, or a post-emergent herbicide, which will kill the grass that is already growing.

There are a few different types of herbicides. Glyphosate is a popular choice because it is effective and relatively inexpensive. You can also use imazapyr, which is a little more expensive but will also kill other plants that glyphosate will not.

You should always follow the instructions on the label of your chosen herbicide carefully. Make sure to apply the herbicide during the time of year when the grass is actively growing. You will also need to reapply the herbicide every few weeks or months, depending on the instructions.

Apply Post-Emergent Herbicide

The best time to apply post-emergent herbicide is in the fall after the pampas grass has gone to seed. For smaller patches of pampas grass, a backpack sprayer can be used. If you have a larger area to treat, you may need to rent a power sprayer. Be sure to read and follow all label directions carefully when using any herbicide.

Apply Post-Emergent Herbicide

There are several types of post-emergent herbicides. Glyphosate is a non-selective herbicide that will kill any plant it comes in contact with, so be careful when using it. Roundup® Concentrate Poison Ivy Plus Tough Brush Killer and Ortho® MAX® Poison Ivy & Tough Brush Killer are two glyphosate products that are available at most home improvement stores.

For a more selective herbicide that won’t damage other plants, you can use Fusilade II Turf and Ornamental Herbicide or GrassGetter™ Selective Grass Killer. Both of these products are available online or at garden centers.

Once you have applied the herbicide, water it in well with a garden hose to make sure it reaches the roots of the pampas grass. You may need to reapply the herbicide several times over the course of a few weeks to completely remove the pampas grass.

If you live in an area where pampas grass is common, you may need to reapply the herbicide yearly for several years until the pampas grass is completely eradicated. But with persistence, you can rid your yard of this pesky weed once and for all!

Non-Chemical Alternatives To Control Pampas Grass

If you are looking for a more natural way to control pampas grass, there are several options available. One is to physically remove the plant by digging it up or pulling it out. This can be difficult, as the roots of pampas grass can be very deep and widespread. If you choose this path, protect your skin with gloves and long sleeves to avoid being injured by the plant’s razor-sharp blades.

Another option is to smother the plant with a heavy layer of mulch. This will prevent it from getting the sunlight it needs to grow. Check under the mulch periodically, as pampas grass can sometimes break through.

You can also try using a weed blocker fabric underneath your mulch. Pampas grass will have a difficult time breaking through this barrier.

Finally, you can use a natural herbicide such as vinegar or salt water to kill the plant. These solutions will need to be reapplied regularly, as they will not completely kill the roots of the plant.

Cut Pampas Grass Back To The Ground

Every year, pampas grass must be cut back to the ground. This can help to prevent it from spreading and getting out of control. You can do this with a lawn mower or a weed whacker. Wear gloves and long sleeves when doing this, as the blades can be sharp.

Once the weed is cut back, you should remove the dead leaves and stems from the area. This can be done by hand or with a rake. Be sure to dispose of the debris in a trash can or dumpster.

Pulling Pampas Grass By Hand

Another way to control pampas grass is to pull it by hand. This can be a tedious and time-consuming task, but it is effective. To release the roots, you must dig around the plant’s base. After the roots have been loosened, the plant may be removed from the ground.

Digging Up The Roots

This method is a bit more labor-intensive, but it doesn’t require any chemicals. To remove pampas grass manually, you need to dig up the roots. It might be difficult to remove pampas grass, especially if it has grown well. Once you’ve dug up the roots, you need to dispose of them properly.

You need to dig around the base of the plant to loosen the roots. Once the roots are loose, you can pull the plant out of the ground. You may need to use a shovel or other tool to help with this.

Once you have pulled up all of the pampas grass, you will need to dispose of it in a trash can or dumpster so that it does not spread.

Salt The Earth

One of the most effective ways to get rid of pampas grass is to salt the earth around it. This will effectively poison the roots and prevent new growth from occurring. You’ll need to be careful though, as too much salt can damage other plants in the area.

It’s best to start by mixing a cup of salt with a gallon of water, then applying it directly to the leaves of the pampas grass. Once you’ve done this, you’ll need to wait for a few days before repeating the process. After a few weeks, you should notice that the pampas grass has begun to die off.

If you’re looking for a more permanent solution, you can always try digging up the roots of the pampas grass and removing them from the ground. It’s difficult, but it will eventually cause the plant to die.

Burn The Clump

Burning is another option for killing pampas grass. This method is similar to manual removal in that it requires some effort on your part. But it’s also a very effective way. To burn pampas grass, the plants must be set on fire. This can be done with a torch or by using an incendiary device. Once the plants are burned, they’ll need to be removed from the area so they don’t regrow. [2]

Burn The Clump


It’s always best to prevent an issue before it becomes a problem. Pampas grass is a perfect example of this. If you live in an area where pampas grass is common, it’s important to take measures to prevent it from taking over your yard. Here are a few tips:

  • Pull up the weed as soon as you see them. The roots of pampas grass are shallow, so they’re easy to pull up. Be sure to get all of the roots out so the plant doesn’t grow back.
  • Use herbicides that contain glyphosate. Glyphosate is a weed killer. You can find it in many different brands of herbicides.
  • Mow your lawn regularly. Pampas grass spreads by sending out runners (roots that grow above ground). If you mow your lawn frequently, the runners will be cut off and won’t be able to spread.

These are just a few of the ways you can prevent pampas grass from taking over your yard. By taking these measures, you’ll be able to keep your yard looking neat and tidy.


What is the best herbicide to kill pampas grass?

The best herbicide to kill pampas grass is Roundup which contains glyphosate.

The amount of Roundup you’ll need to use will depend on the size of the area you’re treating. For a small patch, you’ll only need a few ounces. But for a larger area, you might need up to two gallons.

Another effective herbicide is imazapyr. [3]

How do you burn pampas grass?

The best way to remove pampas grass is by burning it. You will need a permit to do this, so check with your local fire department first. Make sure there are no houses or other buildings nearby that could be damaged by the fire.

Once you have your permit, build a large bonfire in the middle of the pampas grass patch. Be sure to wear gloves and long sleeves to protect yourself from the heat. The fire will take a few hours to burn all of the grass, so make sure you have plenty of wood to keep it going.

When the fire has burned out, wait until the ashes are cool before you try to remove them. You can use a shovel or rake to gather up the ashes and dispose of them in the trash.

Why do you spray pampas grass with hairspray?

Hairspray is used for keeping pampas grass from shedding. You may now put it in a vase and make your home more beautiful with it. [4]

So, pampas grass is also a wonderful decoration for your home.

What is the easiest way to cut down pampas grass?

The easiest way to cut down pampas grass is with a sharp knife or garden shears. You can also use a lawn mower, but be careful not to damage the blades. Pampas grass is a tough plant, so it may take several cuts to get through the entire plant. Once you’ve cut down the pampas grass, you can remove the roots by digging them up.

Will vinegar kill pampas grass?

Yes, vinegar will kill pampas grass. You can use white vinegar or apple cider vinegar. The acetic acid in vinegar breaks down the cell walls of plants, causing them to dehydrate and die.

When applied to pampas grass, it will cause the plant to wilt and eventually die. For large infestations, you may need to use multiple bottles of vinegar.

To use vinegar to kill pampas grass, mix one part of vinegar with one part of the water in a spray bottle. Then, simply spray the mixture on the leaves of the pampas grass plant until they are fully coated. [5]

You should see results within 24 hours, but it may take up to a week for the plant to completely die. Once the plant has died, you can dig it up and remove it from your property.

If you have pets or children who play in your yard, make sure to keep them away from the vinegar spray. Vinegar can be harmful if ingested, so it’s important to use caution when using this method.

What are the benefits of killing pampas grass?

There are a few benefits to killing pampas grass. First, it can help to improve the look of your garden. If you have unwanted pampas grass, getting rid of it can tidy up your garden and make it look more appealing.

Secondly, killing pampas grass can also be beneficial for the health of your other plants. Pampas grass can be quite invasive, and if it’s not controlled, it can crowd out other plants and prevent them from getting the sunlight and nutrients they need to thrive. By getting rid of the pampas grass, you’ll give your other plants a better chance to grow and prosper.

Finally, killing pampas grass can also help to reduce the amount of work you have to do in your garden. Pampas grass can be quite difficult to control, and if it’s left to grow unchecked, it will require a lot of time and effort to keep it under control. If you get rid of the pampas grass, you’ll save yourself a lot of time and effort in the long run.

Is there any way to prevent the pampas grass from coming back?

The best way to prevent pampas grass from coming back is to physically remove the roots. This can be done with a shovel or even a weed whacker. Make sure to get all of the roots, as even a small piece left in the ground can regrow into a full-sized plant. Once the roots are removed, you can treat the area with an herbicide to help prevent regrowth.

If you have pampas grass growing in your yard, it’s important to take action to remove it. Not only is it an invasive species, but it can also be a fire hazard. With a little effort, you can get rid of this pesky plant for good.

Useful Video: How to Kill Off Pampas Grass


Now that you know how to kill pampas grass, you can keep your lawn looking neat and tidy. This guide provides several different methods for getting rid of this pesky weed, so you can choose the one that best suits your needs. With a little effort, you can have a beautiful yard that is free of pampas grass. Thanks for reading!


  1. https://www.gardeningknowhow.com/ornamental/foliage/pampas-grass/pampas-grass-removal.htm
  2. https://www.backyardworkshop.com/kill-pampas-grass-best-things-can/
  3. https://anestwithayard.com/how-to-get-rid-of-pampas-grass/
  4. https://anindigoday.com/how-to-keep-your-pampas-grass-from-shedding/
  5. https://insightweeds.com/get-rid-of-pampas-grass/