Depending on your point of view, white clover is either a menace or a boon. Those who plant clover or embrace its presence see it as a nutritious grazing material or a helpful sign their soil is low in nitrogen. If it shows up uninvited in your lawn and starts to take over your tall fescue, white clover is a noxious weed. If white clover is getting on your nerves, there's no need to worry as it is quite easy to kill.
Apply a broadleaf herbicide to white clover patches. An ideal herbicide contains the active ingredients dicamba or MCPP. Read the label to ensure it will not harm your grass. You may need to apply it more than once to kill the clover. Follow the manufacturer's instructions for application rates.
Mow the grass, cutting only the top third of the blades.
Remove the dead white clover.
Loosen the soil to a depth of 3 to 4 inches with a hand cultivatorm, then tamp it down with your hands or feet.
Apply a starter fertilizer like Green Earth Eco Turf Grass Seed and Starter Fertilizer to bare spots. Every commercial starter fertilizer includes application rates for the size of the area seeded. Follow these instructions and spread the starter fertilizer accordingly.
Reseed bare spots. The best time to seed tall fescue is in the fall. Spring applications also are acceptable, but you run the risk of losing some seedlings to high summer temperatures. Sprinkle the tall fescue seed over the bare spots at a rate of 1 ounce per 10 square feet.
Sprinkle 1/4 inch of potting soil over the bare spots.
Press the soil down lightly with your hand to ensure the tall fescue seed has good contact with the soil.
Keep the bare spots moist until the grass germinates.
One month after planting the tall fescue apply a complete fertilizer at the rate of 1 lb. of nitrogen per 1,000 square feet of lawn.