You also might have to fertilize just a bit more than a typical lawn. If you continue aerifying and fertilizing, your lawn and soil will improve over the next 5-10 years. I know that isn't the best news, but this is a long term project because there is not a lot that you can do to dramatically improve soil quality over the short run. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer.
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