How much topsoil do you need for planting grass seed?

Written by thomas urbauer
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How much topsoil do you need for planting grass seed?
Grass seed needs several inches of topsoil to germinate properly. (preparing soil for garden image by Cherry-Merry from

An important part of successfully planting grass seed includes providing an adequate amount of topsoil in which the seed can grow. This becomes increasingly important if the area has been without turf or other plants because soil easily erodes and washes away under such conditions.

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You should add at least 4 inches of topsoil to the lawn before planting grass seed, according to Cornell University.


The University of Missouri Extension website suggests using 6 inches of high-quality topsoil, while Texas A&M advises you to use 6 to 8 inches of topsoil when planting grass seed.


You should purchase 3 to 4 cubic yards of topsoil per 1000 square feet of ground to be planted, according to the University of Minnesota website. This ensures an appropriate topsoil depth.

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