How to Kill Fescue


There are many varieties of fescue that can be found growing wild throughout North America. When not purposely cultivated, it is often a nuisance. This cool-season grass actively grows when most other plants are dormant and it can quickly take over a yard or garden. Furthermore, fescue often carries fungi that can be passed on to your lawn or garden plants. Fescue is notoriously difficult to get rid of, and hand-weeding rarely works. Often, the only way to kill fescue for good is to use a glyphosate-based broad-spectrum herbicide.

Step 1

Cut or mow the fescue as close to the ground as possible. Allow it to grow 6 inches high before treating it.

Step 2

Apply the herbicide according to the manufacturer's instructions. Spray herbicides should be applied on windless days when there is no rain forecast for at least 48 hours.

Step 3

Wait at least 1 week before re-seeding or planting in the area where you applied the herbicide. It will take at least that long for the herbicide to wash out of the soil.

Step 4

Keep an eye on the treated area. If the fescue starts to come back, wait until the grass is 6 inches high to re-treat it. Otherwise it may develop an immunity to the herbicide.

Step 5

Do not till or mow the area until you have successfully killed the fescue and it has not grown back for at least one month.

Tips and Warnings

  • Protect yourself. Before handling the herbicide, put on a respiratory mask, protective goggles, a long-sleeved shirt, long pants and gloves.

Things You'll Need

  • Glyphosate-based broad-spectrum herbicide


  • Wildlife Management: Fescue Eradication
Keywords: kill fescue, herbicide fescue, rid fescue

About this Author

Emma Gin is a freelance writer who specializes in green, healthy and smart living. She is currently working on developing a weight-loss website that focuses on community and re-education. Gin is also working on a collection of short stories, because she knows what they say about idle hands.