How Often Should You Dethatch Your Lawn?

As a thin layer, thatch is highly valuable; it not only protects grass roots from temperature fluctuations, but it also helps soil retain moisture. If your home's lawn is healthy and disease-free, you may dethatch it once every two to three years, if the need arises. Moreover, you also risk tearing or scalping your lawn when you mow. Excessive thatch may also serve as habitat for lawn pests and prevent the percolation of essential resources into the soil. In most cases, dethatching annually might be one of the biggest wastes of money on your lawn.