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Fill is not optimized for growing grass, plants, shrubs or trees. It is often sandy or contains high clay content because it is taken from deeper under the surface, where little organic material exists. Topsoil, on the other hand, is optimized for use as a nutrient-rich top layer ideal for growing grass and plants. It often has compost mixed into it, and its composition is more balanced than that of fill. There is more organic material in it, and it should not appear sandy or clay-ey. Bottom line is, you use fill build up low areas and level the field, and then cover it with a few inches of topsoil so you can grow stuff and prevent erosion.

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12y ago
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Q: What is the difference between topsoil and fill?
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