The City of Austin Grow Green guide lists Bermudagrass as a turf grass as well as a weed because it can spread into neighboring landscape beds and become an aggressive nuisance.
And it is EXTREMELY difficult to get rid of.
If you think Roundup will take care if it, think again. First of all, it's really bad for the landscape. But secondly, it doesn't work. And yes, I have tried it.
Bermudagrass must be removed entirely. You can't just take off the green blades. You have to get down and dig into the dirt, pulling up all the rhizomes, stolons and roots.
The city also recommends using 8-10 inch barriers, which is why most of the edging out there won't be effective.
From my experience, you HAVE to be vigilant and careful not to let it spread. I've heard advice to make sure that you don't leave behind any Bermudagrass trimmings when you mow or edge, because they can sprout where they land, spreading the problem grass even further.
It doesn't even matter if you don't have Bermudagrass lawn. You can have St. Augustine, like me, and still have a problem if any of your neighbors has it. Just make sure you keep that lawn and your soil healthy, because if the St. Augustine dies, guess what is likely to pop up in its place?
That's right... my nemesis.