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This 2015 image shows holes created in a lawn by the tines of a core aerator on Long Island, N.Y. (Justine Damiano via AP)

This 2015 image shows holes created in a lawn by the tines of a core aerator on Long Island, N.Y. (Justine Damiano via AP)

This 2015 image shows a soil pH test in progress using a home test kit on Long Island, N.Y. (Justine Damiano via AP)

This 2015 image shows a soil pH test in progress using a home test kit on Long Island, N.Y. (Justine Damiano via AP)

This 2015 image shows a soil plug removed from a lawn by a core aerator on Long Island, N.Y. (Justine Damiano via AP)

This 2015 image shows a soil plug removed from a lawn by a core aerator on Long Island, N.Y. (Justine Damiano via AP)