Our lawn is Bermuda grass. We have an area in front of the house with bushes and flowers as well as three trees surrounded by mulch. Every two weeks I go out there and hand weed the Bermuda shoots that are trying to grow into the area. It's best when the ground is moist and important to pull it out with as much of the root as possible. That's why I go out every two weeks as it's usually not as well rooted if I keep on top of it. It usually takes about an hour.
