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How to Kill Quackgrass? (6 Easy Methods Everyone Can Do)

Quackgrass management and eradication require perseverance, but it is possible. Before it takes over your yard just like a lion took over the kingdom, kill the invasive perennial using these methods that I’m about to mention.

Although it’s a humorous moniker, quackgrass is a dangerous opponent that can swiftly take over your lawn. It can split into distinct plant clumps thanks to its robust, deep root system, and no selective herbicide will kill it while sparing your lawn from harm.

Quackgrass also referred to as couch grass, twitch grass, fast grass, quitch grass, dog grass, scutch grass, and witch grass, is regarded as one of the most difficult weeds to get rid of for the reason.

Because it is difficult to eradicate, quackgrass is described as an annoying child on a residential lawn. According to Drew Wagner of Sod Solutions. “Persistence and frequent inspection are needed to remove this grass.”

You might have a quackgrass invasion if you see clumps of quickly growing grass that are taller than your turf, with broad, scratchy leaves and strong white roots.

Continue reading to discover how to spot this hostile visitor and permanently get rid of it.

What is Quackgrass?

Quackgrass is basically a troublemaker that tends to spread the weeds very quickly and undesirably on your lawn. It has a similar look to crabgrass and ryegrass.

Quackgrass isn’t that hard to spot actually, most of the types are thicker and long-bladed than usual grass. The leaves look broader, roots are thicker, and stems appear to be kind of swollen. The maximum height can reach 4 feet. 

How to Kill Quackgrass?

Early prevention of quackgrass is better than removing them afterward. If you spot any, then should act quickly because once it’s spread, it would be much harder to control.

Doesn’t matter what kind of soil you use whether it’s loamy or sandy, quackgrass grows in every condition persistently.

Since you’re late for early picking, there is always a solution to every problem. Let’s go through the approaches to get rid of invasive quackgrass once and for all.

Use Herbicide that Contains Glyphosate 

Using post-emergent herbicide will target weeds, but won’t cause any damage to your beautiful well taken care of the grass. Overall, add 1,000 square feet by using approximately 1.25 oz. of Certainty from 3 to 5 scoops accompanied with 2 gallons of water. To the invasive are from quackgrass, you can use 2.0 oz. of product per acre.  

If the case is severe, intensifying the amount will be more effective and also you can combine herbicide with Alligare 90 surfactant. This is for caution, so the herbicide won’t create a surface runoff. 

Before spraying herbicide, you better

  • Remove the plants you want to keep.
  • Examine the soil in order to determine if the quackgrass is spread in the root.
  • If your pot was infected in a gardening pot or bed, burn the bed with boiling water and herbicide.

After you’re done with the process, wait for a week to see the result, as they come back smaller, keep repeating the same process until they are completely gone. 

Move Your Favorite Plant Somewhere Else 

Moving your favorite plant is ideal since they are done being bullied by the quackgrass. I know sometimes the undesired quackgrass are tough cookies and hard to deal with. 

  • First off, change the pot and the soil by using gloves.
  • Then, use fertilizer.
  • Lastly, dig with either hands, shovel, or trowel the plant.

The very first thing to do when noticing the quackgrass is to find some temporary shelter for your favorite plants and then deal with the issue itself. Sometimes, no matter how careful you are, there is a small chance of killing your favorite plant together with the unwanted grass.

Wrench Out the Quackgrass

 A moment you spot quackgrass, act immediately, don’t let it spread and take over the lawn with its ugly look. The best way is to wrench out as aggressively as you can and fill the space with the new grass. 

Planting new grass in those spots to fill the free space will delay weed production and won’t damage any plants nearby. Trust me, the topsoil won’t get harmed. 

The tools you need to wrench out quackgrass once and for all are getting

  • Grass seed measuring 323 oz. per 1.000 square ft.
  • Seed spreader, and
  • Nitrogen chemical (as a fertilizer).

Homespun Quackgrass Disposal

Looking for a more natural way to end the bullied normal grass and stop them from returning back? Well, it’s going to take some time but in the end, it will be worth the effort.

Dig till you take the root out entirely, take a shovel or trowel, and don’t forget to wear gardening gloves. 

As you keep digging, quackgrass breaks up into small parts and is easier to get rid of them. Avoid using any gardening machine such as a rototiller because as it continues working, it will be harder to control where the roots are spreading, you can even end up with more quackgrass than previous. Be old school and use your hands.

Use Vinegar

Yes, vinegar will have a huge impact on dealing with quackgrass because the ingredients inside contain acetic acid and water. Adding just 10% will end the life of unwanted grass, not only quackgrass.


Quackgrass isn’t sun tolerant, for that reason exposing them to peak heat for hours will burn out the root. So, to complete the mission successfully, you need plastic, duct tape, and rocks. 

  • Start by covering the invaded area with plastic.
  • Use tape to ensure the covering and
  • Put heavy rocks on top to protect from the wind or any possible thing that can move the plastic.

How to Prevent Quackgrass?

After you got rid of all the annoying quackgrass, then it’s time for maintenance, and if you postpone it, a sure thing they will come back. 

Preventing is easy, just adding nitrogen fertilizer will burn the quackgrass root and choke them out. Observing and monitoring once a week will make you detect quackgrass in the early stages and early diagnosis can be easily prevented.

A Brief Recap

Long story short, there are many ways to get rid of quackgrass, so you can enjoy beautiful green grass in your yard. You can use herbicides, wrench them out, solarize and use homemade stuff. 

I would strongly suggest to crow them out in a second you see, so you don’t have to deal with much more later. Remember, early diagnosis is always ideal.

Further Reading

 I assume you enjoyed the article while reading, now I’m asking you to check out our other articles on how to bring back to life dying cordyline and what causes hydrangeas death, and how to revive them.

Here are some tips and tricks to avoid overwatering and underwatering monsteras as well as the frequency of watering Ivy

Natalia Michalska

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