How to Kill Weeds in a Lawn


If a lawn is healthy and lush there is less chance weeds will take hold. The weeds in your lawn may not have blown over from your neighbor's yard, but rather grown from seeds that were already in place, dormant from last season. With a little sunshine and water, they are able to germinate. If you cut your grass too short, this can lead to crab grass, as it gives dormant seeds better access to the sunshine. Before choosing a chemical to treat weeds, consider the type of lawn and weeds, as not all chemicals are appropriate for all lawns.

Step 1

Fill a wand with the appropriate weed killer solution as recommended by your gardening center for the weed and lawn type. A wand is a long tool that resembles a pipe and is filled with weed killer solution.

Step 2

Press the tip of the wand directly on each weed to release the solution. Instead of a wand, you can use weed killer that is prepackaged in a foam aerosol applicator.

Step 3

Mow the grass if you intend to kill weeds close to hedges or other plants.

Step 4

Drag a roller that has been covered in weed killer over the area close to the hedge or other plants to apply the weed killer. Do not touch the hedges or plants.

Step 5

Fill a tank sprayer with water and the appropriate weed killer to treat a large area of the lawn. Apply to the weedy areas by pressing the hand pump on the sprayer and aiming the nozzle at the weeds.

Things You'll Need

  • Wand or a foam aerosol applicator
  • Weed killer solution
  • Mower
  • Roller
  • Spray tank


  • "Lawns and Ground Covering"; James Crockett; 1971
  • Lawn Weed Control
  • Your Lawn's 25 Worst Weed Enemies
Keywords: treating lawn weeds, killing weeds in the lawn, killing grass weeds

About this Author

Ann Johnson was the editor of a community magazine in Southern California for more than 10 years and was an active real estate agent, specializing in commercial and residential properties. She has a Bachelors of Art degree in communications from California State University of Fullerton. Today she is a freelance writer and photographer, and part owner of an Arizona real estate company.