Clover fescue is one of the many varieties of cool-season fescue. This tough, tall hardy grass is commonly used to feed livestock. If not contained, it can densely cover an area. But though it may look tough, clover fescue is not hard to kill if you know how to approach it. A few applications of a broad-spectrum herbicide will get rid of clover fescue in no time.
Cut down the clover fescue. If it is very tall, you may have to cut it down to 6 inches or so with garden shears before mowing it low with a lawn mower.
Allow the fescue to grow at least 3 times the height you cut it down to.
Spray the fescue with a broad-spectrum herbicide according to the manufacturer's instructions. Cover as many of the grass blades as possible. Spray in the late afternoon on a windless day when no rain is forecast for at least 48 hours.
Wait and watch. If more clover fescue sprouts, wait until it is at least 6 inches high and then treat it with the herbicide again.
Prevent wild clover fescue from reseeding the land by planting more desirable ground cover on fertilized, tilled soil.