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How to Kill Dallis Grass

By Kelly Shetsky ; Updated September 21, 2017
Kill dallisgrass to improve the look of your turf.
grass image by ana malin from Fotolia.com

Dallis grass is imported from Australia. It is a warm season perennial grass that can be used as a pasture grass. It grows in bunches or clumps, with leaves on the bottom shoots. The leaves have a course texture. Dallis Grass invades turfgrass throughout the Southern United States. If Dallis grass grows in your lawn, it is considered a weed and should be killed. There are several ways to get rid of it, including using herbicides, vinegar and laying down a tarp to block the sunlight.

Lay a black tarp over the Dallis grass. It will block the sunlight, which will eventually cause the grass to die. Wood chips or newspaper will also work. This method takes time but is environmentally friendly.

Spray small areas of Dallis grass with Roundup or another herbicide containing glyphosate. Spray according to the instructions on the label. Once the grass turns brown and dies, fill in the areas with sod such as centipede grass or St. Augustine grass. This will keep the Dallis grass from regrowing in the same spots.

Spread a tarp on the sections of your grass that you do not want to kill. This will protect the plants there.

Pour white vinegar in a spray bottle. Spray the Dallis grass until it is saturated. If you're trying to kill more than a couple yards of the grass, buy very large bottles of vinegar.

Let the vinegar soak into the plant. It takes at least one day for it to penetrate the Dallis grass and the roots, killing it. If it doesn't work as well as it should, reapply the vinegar until it kills all the weeds.


Things You Will Need

  • Herbicide
  • Gloves
  • Sod
  • Plastic tarp
  • Vinegar
  • Spray bottle


  • Wear gloves when handling chemicals for your safety.


  • Do not inhale chemicals such as herbicides.
  • Do not apply herbicides on windy days because the chemicals will spread.

About the Author


Based in New York State, Kelly Shetsky started writing in 1999. She is a broadcast journalist-turned Director of Marketing and Public Relations and has experience researching, writing, producing and reporting. She writes for several websites, specializing in gardening, medical, health and fitness, entertainment and travel. Shetsky has a Bachelor of Arts in communications from Marist College.