Answer: Now that you've aerated your lawn, you can spread a thin layer of sand or peat or compost over the top. This material will work its way into the holes left by the aerator and will help improve soil drainage. You can overseed at this time if the entire area needs renovations, or you can simply spot seed by raking the dead grass roots out of the bare areas and broadcasting seed over them. Don't fertilize immediately before or after reseeding. Wait instead for about 4 weeks and then fertilze with a 3-1-2 ratio of NPK at the rate of about one pound per 1,000 square feet of lawn.
Water deeply once (or twice) each week and your grass should be thick and lush by this summer.
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