It's probably just as well most folks don't know that Bermuda grass roots exude chemicals that slow the growth of other plants, even peach trees. It seems nothing, except dense shade, will stop Bermuda. This grass is a survivor. Chopping it up just makes it multiply faster. Digging up Bermuda grass is considered a waste of energy, since a single sprig is all it takes to start the invasion all over again.
Herbicides give a season's relief but little more.
And, Pleasant contends, a single surviving sprig can cover a square yard in a few week's time. It's these tough stems and roots that give Bermuda grass another of its common names, Wire grass. In South Africa it's called Quick grass, and in India it's Doob grass. Strangely, no reference explains exactly why Cyndon dactylon is named after Bermuda, when it comes from east Africa and India. Introduced in this country about 200 years ago, most of the weedy Bermuda grass we encounter descends from a variety called Coastal, which was extensively planted in the southeast for pasture grass.