Some thatch is good, but too much can lead to disease and prevent nutrients from reaching the roots. Here's how and when to ...

The first step is to mow the lawn so that the grass is about half its usual length. This will help prevent damage to the grass during the dethatching process and make it easier to remove the thatch.

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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Decayed grass blades and stems—known as thatch—can prevent your lawn from absorbing the water and oxygen ...