Lawn Maintenance with Power Rakes

Removing Thatch

• Power rakes are set to remove thatch layers that are over 1/2-inch thick. Thatch is the organic material that builds up between the grass and the soil. A thick layer impedes grass' ability to absorb nutrients from fertilizers and water. In addition, thatch creates a hospitable environment for pests. Gardeners use power rakes to dethatch their lawns as soon as their grass has greened up for the year. Lawns that have thatch layers over 1 inch must be dethatched once at the beginning of the growing season and again a few months later.

Removing Dead Grass

• Gardeners renovating their lawns use power rakes to remove dead grass. Lawns that have weed growth that is 50 percent or higher must be renovated, according to the University of Minnesota. Also, grass types that fail because they are unsuitable for the climate or soil type of the yard must be removed. Before using a power rake, gardeners must spray their existing weeds and unwanted grass with a weed killer that contains glyphosate. Once the vegetation is dead, you can remove dead debris with the power rake.

Removing Moss

• Moss growing on lawns prevents sunlight, air and moisture from getting to grass. Oftentimes, moss growth is a sign of underlining lawn problems such as a thick thatch layer. Gardeners kill their moss using a moss killer that contains ferrous sulfate, according to Washington State University. Several applications may be needed to completely kill the moss. When the moss is dead, gardeners use a power rake to remove the dead moss from the yard.

Using Power Rakes

• Gardeners typically rent power rakes from their local gardening supply center. Power rakes are rarely used in lawn maintenance, which doesn't warrant their cost. To use the power rake, set the blades to the correct level for the job you want it to perform. When dethatching, avoid setting the blades too low or you can harm your turf grass. Furthermore, pour gasoline into the power rake on a concrete surface. Gas burns up turf grass. Push the power rake back and forth across the lawn. Rake up all debris on the top of the grass.