Tony B

Sorry for the lack of clarity.  The lot soil was not good when the house was buit.  The soil is hard and clay like with sand beneath it.  Top soil was added for the sake of the lawn.  Wherever the yard has a high spot, the escavator left a thin coat of topsoil.  Wherever the yard has a low spot, the escavator left a thick coat of topsoil.  Thus, during hot, dry months, the grass stays green in the areas of thick topsoil and dries out in the areas of thin topsoil.

Approximately 1/3 each of clay, sand and soil.

Hi Mr. Wheaton,

Thank you for your web site.  I have found it very helpful improving my neighborhood lawn.  I could use your help.  My lawn has some areas where the topsoil is thin.  During wet, cool months the grass does fine.  During dry, hot months (July and August here), I can't keep the grass green even with your recommended watering.  Is there a way to add topsoil, or do I have to remove the existing turf, add topsoil and replant?  If I can add topsoil, how much can I spread without damaging the existing grass, and how often should I apply it?

Thank You,  Tony B