The term "topsoil" usually refers to the top 6 to 8 inches of your soil. It is ideally loose and rich in nutrients, which are obtained from organic matter such as peat moss. The topsoil is then more ideal for planting vegetables, flowers and trees. Topsoil can also be purchased in local garden stores, but it is often more economical just to use your existing soil and amend it slightly to create a good topsoil and planting bed.
Use rototiller or hoe to turn over the top 6 inches of soil.
Spread 1 to 3 inches of peat moss, which is available at your local nursery, over the top of the soil that you just loosened. You can also use compost or well-rotted manure if it is available.
Incorporate the organic matter into your soil with a hoe or rototiller. Your topsoil is now ready for plants.