What is lawn dethatching and why is it so important?
Thatch is a build-up of organic matter made up of grass clippings, leaves, stems etc. Dethatching involves removing the excess layer of thatch from your lawn that can lead to several issues.
Thatch: beneficial or detrimental?
A thin layer of thatch can be beneficial. It helps limit weed germination, reduce water evaporation, and protect from frost damage. When it gets thicker than 1/2″, it can cause the following:
This varies widely depending on the variety of grass, the climate, and the overall health and maintenance of your lawn. The most common variety of grass found in Minnesota is Kentucky Bluegrass. This cold weather grass variety is known to quickly build excessive layers of thatch. Dethatching is recommended annually in Minnesota due to the combination of grass variety & cooler climate. Dethatching can be one of the most effective ways to revive or drastically improve the quality of your lawn.