What is the best way to kill Bermuda grass in flower gardens?
I have Bermuda grass in my flower gardens and I have uses round up and many other type of weed killers to kill the grass and I still have the crap.
My sister, Susan Osborne, professional gardener for forty years, has a simple single answer to your question and I don't think you'll like it (I sure don't!).
Here it is: "get out every single root or piece of root."
And that's the painful truth.