How to Dethatch Lawns

Lawn Grass

About Dethatching Lawns

Thatch is the buildup of decomposing blades of grass. It’s the grass your lawn mower cuts off. A regular lawn mower cuts a blade of grass off in one cut. A mulcher-mower cuts the blade of grass many times, to help speed up the decomposition of the cut grass, or “thatch”. It is good to leave the cut grass on the lawn, as it returns valuable nutrients, most notably nitrogen.

A problem occurs when there is too much decomposing grass in your lawn. Thatch builds up when the decomposition process is too slow in decomposing the grass. Excess thatch is most common in spring to early summer, when lawns are growing the fastest. Thatch then builds up into a thick, stifling layer. Heavy thatch impedes the movement of nutrients and water to the roots of the grass. Secondly, it can prevent the emergence and growth of new blades of grass. It also can harbor plant disease that is harmful to your lawn.  

De-thatching lawns help in overall lawn growth and health when thatch buildup is excessive. De-thatching is the process of removing the cut, decaying layer of dead grass. It’s accomplished by simply raking out the thatch. If the task of raking your lawn seems overwhelming, lawn care services can do it for you.

In most cases, de-thatching need not be a regular lawn care chore. It only needs to be done when thatch build-up is excessive.

When to Dethatch Lawns

Your lawn probably needs dethatching when any of the following conditions occur:

  • Brown patches appear in the lawn.
  • The grasses appear to be stressed.
  • Insect infestations occur.
  • Plant disease appears in the lawn.

How to Dethatch a Lawn

Dethatching a lawn is simple, yet laborious.

Simply use a stiff rake to remove it from the lawn. You can dethatch an entire lawn. Or you can rake thatch out of smaller areas of the lawn.

Also, you can hire a lawn care service. They have dethatching equipment to remove excess thatch buildup. 

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