Lawn dethatching can be crucial to keeping your grass and soil healthy. Even if you are mowing and doing everything else necessary for your lawn, thatch can build up. ... Detaching removes the thick layer of dead plant material (thatch). This allows air, water, and nutrients to reach your plants and soil again.

Is it necessary to dethatch your lawn?

Thatch builds up over time, so it's not necessary to dethatch every year. Plan on dethatching every five years or so if your lawn needs it. You might want to give your lawn a quick check every year just to see how much thatch has accumulated.

When should I dethatch my lawn?

Dethatch the Lawn

For northern grass the best time to dethatch your entire lawn is in late summer to early fall when the grass is actively growing. For southern grasses, dethatch in late spring. In early spring, and for small areas, use a thatching rake, which is a sharp-tined rake that rips the thatch out of the lawn.