How deep should topsoil be for garden

To grow well, and stay healthy over time, your lawn needs a decent amount of good quality topsoil, just like any plant. Otherwise, it won’t have enough room for its roots to grow.

In this guide, we’ve explained how much soil you need for your grass to grow well.

We’ve also explained how to assess the quality of your soil at the moment, to help you find out how much topsoil you need to add to help your lawn grow strong.

How much soil does grass need to grow?

If your topsoil is perfect, in that it is nice and dark, and contains plenty of minerals and organic matter, you only need about five inches of soil for grass to grow well.

Will grass grow in 2 inches of soil

This is how long the roots on most types of grass end up growing.

However, if your soil is not in great shape, you may need to add fresh topsoil to help your lawn grow strong. Grass doesn’t just need five inches of soil – it needs five inches of fertile topsoil.

Is my current topsoil good enough?

To test your current topsoil, and assess how well grass will grow in it, you can:

• Look at the colour of the topsoil.

  Is it

  how deep should soil be for new grass
  how deep should soil be for turf