Home & Garden

June 15, 2013

Gardener’s almanac (June 15)

Dethatching lawns — If your zoysia or Bermuda lawn has more than half an inch of thatch, it should be dethatched between now and the end of July, Ward Upham of K-State says. Core-aerate when the soil is neither too wet or too dry, but just crumbly. Go over the lawn so that the aeration holes are about 2 inches apart, Upham says. Or, if thatch is more than 3/4 inch thick, power-rake, he says. Set the blades just deep enough to pull out the thatch or you can damage the lawn. The lawn can be severely damaged by power-raking too deeply. In some cases, it may be easier to use a sod cutter to remove the existing sod and allow the grass to come back from rhizomes or start over with seed, sprigs or plugs.

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