overzealous roses? I wish! LOL Still, I hear ya... some plants are a real pain (literally) to weed around.
Is your OSO easy fragrant spreader rose genuinely fragrant? If so, it would be nice to get some established along the back side of our little tree line... thinking ahead to when they start building back there; I'm going to need some plants like that.
I don't use a lot of chemicals, but sometimes for grass like that growing in an area where it's hard to get it out I do resort to a grass-icide. Just like there are broad-leaf herbicides to use on lawns that don't kill the grass, there are also grass-specific herbicides. From time to time, it's useful to spray little clumps that I can't readily pull. I also use it on Johnson Grass, which is just impossible to get rid of by pulling.