How to use a Lawn Dethatcher

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Why do I need to use a lawn dethatcher?

Thatch is made of up old grass clippings, dead roots, leaves and other small organic debris.  It builds up in layers underneath your lawn, on top of the soil.  Good lawn dethatchers will clear this layer away allowing water, nutrients, and air to reach the soil.

Take a small plug of your lawn from an inconspicuous area using a hand spade.  If you see more than a half-inch of thatch, your lawn could really benefit from dethatching.  Dethatching is accomplished easily by attaching a pull-behind unit to your lawn tractor or with an optional kit added to the front of your lawn sweeper.

When do I need to use a dethatcher?
Dethatch at least once a year in early spring to help prevent disease.  A second dethatching in the fall helps maintain a healthy green lawn.  Dethatch after watering or after a little rainfall since moist thatch is easier to remove.  Don’t dethatch during the dry summer months because this could overexpose the roots; dethatching in spring insures maximum growth potential.

How do I use a dethatcher?
Dethatching is most effective when the tines are not impeded by surface debris or soil clumps.  For best results before dethatching, use a lawn roller to level out bumps and crevices.  Mow grass and then remove large leaves and sticks using a lawn sweeper or vacuum.

After attaching the lawn dethatcher to your riding lawnmower, make two perpendicular passes – being sure to overlap each time.  Sweep up loosened thatch with a rake or with a lawn sweeper or vacuum for large areas.

Lawn dethatcher

Author: Brad Turner

Brinly-Hardy 175 Limited Edition Cart

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2 Responses to How to use a Lawn Dethatcher

  1. Paul L. Tarling says:

    I set the height of the Dethatcher as instructed in paper work that came with the dethatcher and very little dead grass come up from my lawn!?I had about 1/2 inch space below the rods when on a hard surface. When I put together the 48 inch wide dethatcher about 14 washer and one bolt was missing.I had to go to local ACE Hardware in Raymond,New Hampshire to Buy the missing WASHERS and BOLT !I ‘m puzzeled by instructions the correct height setting for dethatching my lawn ! Also I took a survey on your website and received a reply wanting to know my email address and T shirt size ( 44 XL ),jtunicorn@earthlink.net is my email address.Paul L. Tarling,42 Chester Rd.,Raymond,N.H. 03077-2016

    • Brinly Hardy says:

      Hi Paul, I apologize about the missing hardware. We just recently switched over to skin-pack/blister-pack packaging to alleviate that problem, but of course that doesn’t do anything for the products already on shelves. As far as the question about your height setting, you may just need to place a cinder block or some other weight (up to 50 pounds) on the weight tray in order to engage the tines more.

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