Before using a power ... occurs in spring or early summer after they’ve completely “greened up.” If your lawn is dormant or stressed by drought, don’t dethatch. You can do irreparable ...

Ultimately, you should dethatch the lawn if there’s more than half an inch of organic matter blocking essential resources from the grass roots. You should also do this before aerating the lawn.

Ultimately, you should dethatch the lawn if there’s more than half an inch of organic matter blocking essential resources from the grass roots. You should also do this before aerating the lawn.