If you are careful, you might be able to kill it with herbicides without damaging too many of your other plants. Otherwise, it is going to be extremely difficult to control.
Other than irises
, my flower gardens consist almost entirely of native prairie and woodland plants. But, I've learned the hard way that some of them aren't very suitable for small spaces. They need room to roam.
The rhizomatous species, in particular, deserve careful consideration before planting.