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How Much Topsoil Is Needed to Lay Sod?
How Much Topsoil Is Needed to Lay Sod?. Sod is sometimes called "instant lawn." That nickname, however, belies the fact that preparing the soil for the lawn is anything but instant, whether you are laying sod or planting seed.
Sod is sometimes called "instant lawn." That nickname, however, belies the fact that preparing the soil for the lawn is anything but instant, whether you are laying sod or planting seed.
Considerations
You don't need topsoil when installing sod, according to the experts with the University of Rhode Island. They suggest that you amend your current soil with organic matter, limestone and other materials. If you feel that you must order topsoil, you will need 4 to 6 inches.
Preparation
One of the most critical steps to success with your new sod is proper preparation of either the existing soil or the topsoil you purchase. Submit soil samples to your county cooperative extension office to determine what is lacking in the soil and get suggestions on how to improve it for healthy sod.
Warning
Adding topsoil around trees raises the grade around them and may damage or kill the roots. Extension agents with Clemson University suggest that you construct a low wall from brick, rock, masonry or other materials around the tree.
