Lawn Dethatching in Chanhassen, MN

Dethatching is the process of removing the layer of dead grass, roots, and debris—known as thatch—that builds up between the soil and grass blades. Too much thatch can block water, air, and nutrients from reaching the soil.

If your lawn feels spongy underfoot or you notice water running off instead of soaking in, you may have a thick thatch layer. A thatch layer over ½ inch thick is a sign that dethatching is needed.

The best time to dethatch is during your lawn’s peak growing season. For our area, this is early spring (before the grass gets too long) or early fall. This allows the lawn to recover quickly while the weather is cool.

Your lawn may look a bit "shaggy" or thin immediately after service, but this is normal. By removing the debris, you are creating space for healthy new growth. Within 1–2 weeks of watering, the lawn will look much healthier than before.

After dethatching, it’s a great time to overseed, fertilize, and water your lawn. This helps fill in bare spots and encourages healthy new growth while the soil is exposed.