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How to Kill Ryegrass in Bermuda Using Hebcides Or Mowing

by Jack Grover
Reading time: 9 min Prefer to listen?

Ryegrass is used as lawn and pasture grasses on various sports grounds. It is cool-weather grass. On the other hand, Bermuda is a creeping grass grown in the warmer season. So people often overseed Ryegrass in Bermuda as they have a beautiful green lawn all the year-round. But Ryegrass hinders Bermuda grass from growing properly.

To maintain your lawn wholesomely, you need to maintain both types of grass. So it becomes necessary to kill Ryegrass in time. You may don’t know how to kill Ryegrass in Bermuda. Here we will instruct you in this regard. 

How To Kill Ryegrass In Bermuda?

kill Ryegrass in Bermuda

The lawn owners want green in all seasons. Since temperature affects the lifespan of the grass types, you can not enjoy full green planting one type of grass. Ryegrass and Bermuda make a good combination in this case.

Ryegrass becomes dead when the temperature rises, but it can survive when the cool temperature lingers in spring. Further, it can intermingle with bermudagrass and weaken it. In turn, when it is summer, your Bermuda and Ryegrass will both be dormant. You need to take the necessary steps to kill Ryegrass.

Below are some effective chemical ways:


There are many herbicides available to kill Ryegrass. Glyphosate is one of the best ryegrass killers. It is very important to use an adequate rate of glyphosate to kill Ryegrass. The recommended rate of using glyphosate is 1.25-1.50 lb a.e/ acre with Ammonium Sulfate and surfactant.

The best time for this is late March to early April. Please note that in some states or countries, glyphosate is invalid to use. So please use it after maintaining the governance rules of your state or country.


MSM (Methylsulfonylmethane) is an effective herbicide to kill Ryegrass. Once you spray it on the Ryegrass, the chemical will simply kill the grass. This solution uptakes through the foliage and absorbs with the root system. It blocks the cell division and stops the growth. The timing of the application is important. Target the Ryegrass 5-6 weeks prior when the soil temperature gains a consistent 65-70 degrees.


1. Spray your Ryegrass when there is an ideal temperature and soil condition, like April to May.

  • Spray when the daylight should be 55 °F (13 °C), and night temperature should be 55 °F (13 °C)
  • Spray when the soil temperature is above 45 °F (7 °C).

2. Use herbicides when the Ryegrass is not above 8 inches in height.

If it becomes more than 8 inches, it will decrease effectiveness. So If you want to kill 8-inch Ryegrass, you have to apply other methods like mowing and digging.

  • You should not mow the lawn before 2 or 3 days of spraying.
  • It should be remembered that the herbicides will be effectless after seedhead emergence.

Kill Ryegrass without Herbicide

Though herbicides are the most effective ways to kill Ryegrass, many do not prefer them. If you don’t like to use herbicide on your lawn, then you need to work manually and technically. You can do the followings:

  • In late spring, reduce the watering and fertilizing level on your lawn.
  • Mow the grass every week gradually and continue it until the grass height is about 1 inch.  

By doing these steps, the Ryegrass will weaken while rejuvenating Bermuda. You need to continue mowing until Bermudagrass has started to green up. Then you can resume mowing, watering, and fertilizing your warm-season grass.

This Video Will Help You Too!

Frequently Asked Question (FAQs)

What is Bermuda ryegrass?

Basically, when Ryegrass is seeded in Bermuda grass, it can be called Bermuda Ryegrass. Bermuda grass is greenery grass giving a vibrant color and look. But in Winter, Bermuda seems to be getting brown, and so Rygrass weed is sown mostly to get rid of this issue.

How do I permanently kill bermudagrass?

The best way to kill Bermuda grass is to choke it out or use herbicides. It is challenging to kill Bermuda grass because of its aggressive growth. It is proven to have an excellent result after using highly effective Bermuda grass killers like Ornamec 170, which is a grass herbicide.

Will Ryegrass kill Bermuda grass?

If Bermuda and Ryegrass both are sown at the same time, there can be no friction like opposition. Both can not grow properly. As Bermuda grows well in summer and Ryegrass grows well in Winter. So in this case, Ryegrass can not kill Bermuda grass.

How to get rid of Ryegrass in Bermuda?

If you want to kill Ryegrass, use herbicides such as metribuzin with the right proportion of water. It is straightforward to use to remove Ryegrass simply. Besides, it’s best to start mowing at night when the temperature reaches a certain range.

Will Ryegrass choke out Bermuda?

Technically, it could be, but in seasonal terms, it does not. From the above information, we came to know that Ryegrass can not kill Bermuda, and in this case, the answer can be the same. The growing time of Bermuda and Ryegrass is not the same, and so it does not get possible.

Is Ryegrass good for Bermuda?

As we know that Bermuda and Ryegrass do not appropriately grow at the same time, Bermuda and Ryegrass can be sown at the same time. As Bermuda starts dormant in Fall, the Ryegrass will grow in Winter, and as a consequence, it will keep green the whole Winter.


No matter how big the problem, it is no longer a problem when the solution comes out. The more effective the solution, the greater the success of the work. The problem in Bermuda is the rapid growth of Ryegrass.

So we have discussed effective ways how to kill Ryegrass in Bermuda. If you want to enjoy the green all summer, just maintain the process of applying those herbicides or manual ways described in the article.

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