Answer: All turfgrasses develop a layer of thatch (dead stolons and stems). When the thatch layer gets too thick your bermuda will feel spongy when you walk on it. Dig down into the lawn and take out a 5-6 inch patch of sod. Inspect the depth of the thatch. If it is over a half inch thick you may want to rent a power dethatcher to rake it out. Then you'll want to overseed. Late summer or early fall are the best times to dethatch and overseed, or late winter/early spring.
Bermuda thrives on fertilizer. You should apply fertilizer to Bermuda two to three times during the growing season. In April, it will start to come out of its dormant state. When it is about 50% green, apply a slow-release, high nitrogen fertilizer to your lawn. Make a second application about six to eight weeks later or as directed on the bag. A third application in another six weeks may be desired. Apply a "winterizer" to Bermuda in late October to prevent winter injury. To prevent winter weeds like poa annua, apply a crabgrass preventer to your Bermuda lawn in late September or early October. Apply it again in February to prevent crabgrass and certain other broadleaf weeds. A healthy, well-fed Bermuda lawn rarely has a weed problem. If weeds do develop, apply a lawn weed killer in June to control growing weeds.
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