Fescue makes a very beautiful lawn if properly cared for and if properly mowed. Mow on a regular basis. If your fescue is allowed to grow too high between mowings you will end up cutting the stalks of the grass rather than the blades of the grass and your lawn will look ragged and bare. A few simple tricks to proper mowing can improve the quality and the look of your fescue lawn tremendously.
Sharpen your lawnmower blades or have them sharpened. Dull blades tear your lawn rather than cut it neatly. This results in a ragged, yellowish look to your lawn, increases water usage and could even encourage disease.
Set your lawnmower on a flat surface and measure from the lowest portion of the cutting blades to the ground. Set your blade height to 2 1/2 to 3 inches if your lawn is in a sunny location. Set your blade height to 3 1/2 inches if your fescue is growing primarily in the shade. Make certain each wheel is set the same when setting your blade height.
Cut no more than 1/3 of each grass plant during in one mowing. For instance, if your grass is 3 inches long you would not want to cut off more than 1 inch of the grass.
Mow your fescue weekly to keep your lawn looking its best and to prevent your grass from growing too tall between cuttings, which could result in cutting your grass at the stem rather than cutting the leaves.
Fertilize your fescue with a nitrogen-based fertilizer at the beginning of each growing season.