ᐅ Required Topsoil for a Lawn – Any Experience?

Hello everyone,

We have clay soil as the ground base. Our neighbors barely have any grass growing.
What depth in centimeters of topsoil is needed for a healthy lawn?

Thank you very much for your help!

Best regards

We replaced 15-20mm (0.6-0.8 inches)! But please install drainage; otherwise, when it rains, your lawn will turn into a pool.

15-20 cm (6-8 inches) is more likely... I can only emphasize the importance of drainage based on my experience!

Yes, exactly cm (centimeters) :-)

And additionally, you should make sure that your landscaper properly and thoroughly loosens the subsoil, which is usually compacted by the construction site! Otherwise, waterlogging can occur, and most garden plants do not tolerate that.

Clay soils are fertile but challenging to work with. They are heavy, hard when dry, and sticky when wet, with little drainage; however, the soil retains water for a long time during dry periods. Of course, grass is not wheat. We also have clay soil but managed to establish the lawn without replacing the soil.

The steps were to leave the soil over winter, allowing frost to loosen it. In spring, we loosened the soil by passing once with a traditional hoe (sometimes called a “field hoe” or “grubbing hoe”). While doing this, sand was applied and worked into the soil.

A gardener came and then leveled the area using a rotary tiller. After that, the lawn was sown and gently forked in, without compacting. Then we waited. And behold, evening came and morning followed, and the grass began to grow. The gardener observed and declared it to be very good.