Top Ways: How To Kill Dallisgrass


I have loved the green scenery since I was a child and I know most of my readers do too. It has such a calming effect that I eventually nurtured the act of gardening deep within me. However, there are some things that we cannot appreciate if they’re in excess.

My friends and I would often discuss how to kill dallisgrass because a simple weed removal tool would not be enough to get rid of it anymore. This is the brainchild of this article. I would like to share with you, my readers, the most effective strategies I have learned to eliminate dallisgrass. This is dedicated primarily to my friends who reside in the southern part of the States.​


The Life Of Unlimited Dallisgrass​

A.T. Dallis (Yup! The name was an acknowledgment of him) introduced the plant in our country during 1800’s. At first, people were so welcoming because it was really able to enjoy the climate and started to thrive easily. They loved it as it grows easily and served as a good source of food for the livestock in their pastures.

Conversely, during the turn of events, it started to grow uncontrollably.

Well, it would not be much of a problem if it was just growing right? The main concern attached to this scenario is that it is an easy target of ergot fungus. This will lead to further teething troubles.

Here are the things that could happen when our stocks like cattle would feed on them​

  • Muscle trembling: this includes all major muscles especially in the head
  • Uncontrollable movements: jerking from time to time would be one of the manifestations
  • Mood problems: animals can go from stable to aggressive. They can get shocked and would just go wild
  • They might get weak
  • They will experience seizures
  • In severe infections, our anumals can die

Without further ado, here are the steps on how to kill a dallisgrass but first, we have to prepare the following materials

  • 1. Gloves – so you can clearly examine your lawn​
  • 2. Shovel to dig your land if you choose the conventional way of killing dallisgrass
  • 3. Pre-emergent herbicides
  • 4. Post-emergent herbicides

Step 1: Assess

An ergot fungus Claviceps paspali, would infect dallisgrass as they mature. This typically happens during the fall. The poisoning nevertheless can happen all year round.

How to Pinpoint Dallisgrass?

One characteristic of this is that the grass has bunches of seedheads. It has a wide leaf blades which can grow as long as 10” long. It has purplish culms. The grass basically has a rough texture. Its short internode rhizomes looking like concentric rings.

There is a visbible flattened leaf sheath, drooping sensitive spikelets appears from the flower stalk and the underground stems which are shallow grow towards the outside.

They grow rapidly and they can harbor a new breed of grass inside as their clump matures. Lastly, Dalligrasses can grow huge that they would appear like a plant when they merge together

How to detect infected dallisgrass​

  • Grayish to black swellings in the head
  • The head could be described as popcorns by some
  • Head produces a sticky sap

Now, you might be wondering why it is important to eradicate this diseased plant. It’s because our livestocks can eat these plants and get poisoned.

Step 2: Removal of Dallisgrass

Hollow out

After being able to identify your culprit, we now have to dig it. Cutting or trimming it will not be effective, we have to totally remove this grass.

If it appears in your flower beddings, remove the entire plant and transfer it to a healthy ground. Substitute the space where you took your plant off using a mulch. This will apparently halt the development of the dallisgrass seeds.​

If you do not want to use a mulch, feel free to just solarize and aerate the area for drying.​

PRO TIP: A mature Dallisgrass is more complicated to mulch. Lay a plastic fabric (alternatively, you can use your typical black garbage plastics) on its top to control spread of its seeds.

Use of Chemicals

A stubborn dallisgrass that cannot be exterminated through digging needs further intervention.

Select the best post-emergent herbicidal formula that suits your time, resources and of course budget. There are different kinds of herbicides: selective and non-selective.

Selective herbicides kill weeds according to their specie. On the other hand, non-selective herbicidal means it can kill all sorts of weed (and even plant) that comes with it.

Please read the labels first before starting. Make sure to wear appropriate personal protective equipment such as gloves and masks and even protective eyewear before using.​

PRO TIP: Address the chemical product to the source of the seed or else it will just continue producing and spreading it.​

Step 3: Proper Maintenance

Once you are able to kill dallisgrass, the next focus would be keeping the lawn healthy. A healthy grass would not be easily susceptible to any kind of disease. Make sure that the grass are watered, trimmed and fertilized at a regular basis. This will prevent vacant or bald spots in your lawn.

If there are vacant areas, the seeds of the dallisgrass which are easily carried by the wind can implant on the soil and start nesting. Make sure you immediately plant the bare areas of your lawn with your desired seedlings.​

PRO TIP: It is advisable to use herbicide to prevent dallisgrass as a preventive mechanism as well. You can buy them in the market or you can make your own formulation.

The goal of pre-emergent herbicide is to stop seed germination. This means that it serves as a protective and preventive medication for your garden.


Although grasses are pleasing to the eyes, they might have untoward effects if not maintained properly. In the case of dallisgrass, the problem could be more than just a simple aesthetic concern.

To sum, you have been informed about the negative effects of growing dallisgrass not only to your on your lawn but to the animals eating grasses from your meadow as well. We have also discussed the top 3 process to kill a dallisgrass and that is to: assess, remove, and maintain.

Hopefully, with the aid of this blog, you will also be able to get rid of them and safeguard your livestocks from getting poisoned.

Here are additional Pro Tips for you​​

  • Make sure to apply your grass killer while the dallisgrass are healthily developing
  • Do not mow your lawn for 2 weeks so the dalligrass can mature first
  • Adjust the rate of the herbicide according to the number of dallisgrass you would like to kill
  • The temperature of the environment greatly affects the effectivity of your herbicide and it’s effect to nearby plants, hence, double check your rates before applying during summer
  • If there are already seedlings, do not waste your money on pre-emergent herbicides as they will not help at all

Do you find these tips helpful? I invite you to share other techniques not mentioned at the comment box.

Top Ways: How To Kill Dallisgrass
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