How to Quickly Kill Existing Grass That's Mostly Weed


Whether it's in the driveway or the yard, sometimes grass is unwanted and needs to be killed. Several chemicals will do the job, such as pre-emergent and post-emergent herbicides, but these chemicals are expensive are not good for the environment. Also, grassy weeds that exist as part of the yard require nonselective herbicides, says the University of Minnesota, which can damage desirable plants in the area and may take a long time to disappear from the soil, making it difficult to replant.

Step 1

Pour undiluted white vinegar over the area of grass that you wish to kill, says Spray large areas using a pressurized garden sprayer during the heat of the day for best effect. This will kill grass in a few days.

Step 2

Cover large areas of grass with newspaper to keep the grass from getting sunlight. Place 8 to 10 sheets on top of each other, overlapping in different directions for the best coverage. Place mulch over the newspapers to keep them from blowing away and to increase the heat. The grass will die in a few weeks.

Step 3

Remove the newspaper once the grass is dead, and cover the area again with the mulch to prevent further weeds and grass from growing, recommends the Iowa Department of Natural Resources.

Step 4

Hand-pull small weeds that pop up through the mulch.

Things You'll Need

  • Newspaper
  • Vinegar
  • Mulch
  • Water


  • Iowa Department of Natural Resources: Grass and Weed Control For Tree and Shrub Seedlings
  • Gardening Know How: How to Kill Grass Naturally - Kill Unwanted Grass in Your Lawn
  • University of Minnesota: Weed Control in Lawn and Other Turf
Keywords: kill grass, remove grass, kill unwanted grass

About this Author

Cleveland Van Cecil is a freelancer writer specializing in technology. He has been a freelance writer for three years and has published extensively on, writing articles on subjects as diverse as boat motors and hydroponic gardening. Van Cecil has a Bachelor of Arts in liberal arts from Baldwin-Wallace College.