Bermuda grass grows an extensive root system and can be difficult to manage with normal weeding methods. It puts out a network of rhizomes both above and below ground allowing for rapid reproduction. Killing Bermuda grass once and for all can be tricky if it grows near healthy, desirable plants. Many nonselective herbcides are too harsh to use near plants you want to live. Luckily, there are several brands of selective herbicides that target grass and leave other plants unharmed.
Apply a grass selective herbicide such as Grass Getter, Ornamec or Grass-B-Gon onto new Bermuda grass growth that is less than 6 inches in length in early spring. Different pesticides will have different application instructions so be sure to read labels carefully.
Re-apply herbicide to the broad surface of new leaves less than 6 inches in length. Repeat process two to three additional times throughout spring and summer months until your Bermuda grass stops growing.
Dry out your Bermuda grass by preventing any water from accessing the roots. Be sure all sprinklers, hoses and irrigation lines near your grass are turned off.
Till the top 4-6 inches of dirt and remove all the Bermuda grass roots. As their rhizomes tend to penetrate deeply, you may have to till the ground multiple times before all plants are fully removed.
Spread a 1-2 inch layer of mulch around the base of your ornamental and landscaped plants. This will prevent any remaining Bermuda grass seeds from receiving sunlight and sprouting.