Cool How Deep Topsoil For Vegetable Garden Ideas. In most gardens, the top 6″ of soil contains the most nutrients needed for plant growth. How to properly prepare your garden for planting after tilling.

Can you use topsoil as fill dirt? To spread over a garden bed,. If you buy topsoil to use in your yard, you probably want it to be between 1 and 2 inches thick minimum, but i’d go as deep as 5 inches for sod.