Killing Weeds in Zoysia Lawns

Zoysia grass is one of the most weed-resistant of all grass species. Its tightly-knit root system and thick thatch don’t give weeds a very good chance to compete. However, there are times when weeds will appear and you’ll want to get rid of them. They can be easily controlled in your Zoysia turf with a combination of 3 distinct methods.

The Healthy Lawn Approach

Every lawn should be treated with this approach. It involves taking preventative measures to ensure good health and vigorous growth in your Zoysia grass. Maintaining a schedule of cutting your grass to the correct height – between 1” and 2.5” work well for Zoysia, watering it when rainfall doesn’t provide it with 3/4” to 1” of water per week, and fertilizing on a regular basis.

See our article entitled Caring for your Zoysia Grass for all of the details on how to maintain excellent health in your Zoysia turf.

The Manual Approach

Cutting or removing weeds before they can go to seed is essential. In the early part of the growing season, when weeds begin to make their appearance, try cutting your lawn a little more frequently. Never cut it less than ¾”, or 1” to be safe. Frequent cutting will make it more difficult for weeds to become established.

If some tough stubborn weeds keep growing despite frequent cuttings, the best thing to do is to remove them, roots and all. Pull weeds that come out easily or use a small hand spade or trowel to remove them.

Weed Killers

You may want to use herbicides as a preventative measure just before or as the lawn begins to green up.

Some fertilizers contain weed killer. These “weed and feed” products SHOULD NOT be used on Zoysia. They are designed for use after green-up and may be harmful to your lawn.
It’s better to choose a product that is designed only to kill weeds. The best choices for Zoysia grass are known as pre-emergent weed killers. This means that they stop any weed seeds from germinating. Some of you may use these types of products on your flower beds to keep weeds out of them.

For best results, you should know whether you’re trying to get rid of grassy weeds or broadleaf weeds. Weeds in the broadleaf family are most recognizable. They look nothing like grass. Dandelion, chickweed, plantain and clover are just a few examples of common broadleaf weeds.

Grassy weeds may be other species of grass such as Fescue or Bermuda that you don’t want in your yard.

Read the label of any product you are considering. Make sure it will get rid of the types of weeds you’re dealing with and that it is appropriate for use with Zoysia grass. Apply the herbicide as directed. Some products will instruct you to water the lawn once you’ve applied the weed killer. This is an essential part of the process.


A weed-free Zoysia lawn starts with nurturing good health in it. After a few years of dedication to quality lawn care, weeds will be very little problem for your Zoysia turf.


  1. What is the cheapest and most effective way I can get rid of broadleaf weeds and creeping red fescue in my established 1-1/2 acres of zoysia grass ? Thank You,William

Leave a Reply to William Morgan Cancel reply