Push a core aerator across your lawn. Core aerators remove plugs of soil 1/2 to 3/4 inches in diameter and 1 to 6 inches deep. Aerating the lawn prepares the soil for top dressing, which improves the fertility of sandy soil.
Mix together one part loam and one part peat. Add a small amount of sharp sand to the mixture to help distribute the top dressing. Apply 1 inch of top dressing over the soil with a rake.
Apply 1 inch of water to the lawn. To tell if you have given your lawn 1 inch of water, set tuna cans in the yard. Measure the amount of water in the tuna cans and stop when you have applied 1 inch.
Allow the fescue or zoysia lawn to grow 1 inch higher than the recommended rate for the grass type. Grass grown in shade undergoes stress if mowed to short. Keep fescue at 3 inches in height during the spring and fall months. During the heat of the summer, allow fescue to grow to 4 inches in height. Zoysia grass must be kept to 2 inches in height during the growing season.
Fertilize your lawn with half of the recommended fertilizer rate for your grass type. For example, tall fescue is typically fertilized with 1 lb. of fertilizer per 1,000 square feet. Apply 1/2 pound of fertilizer per 1,000 square feet.