how invasive is bee balm?
I just bought 3 "coral reef" bee balm plants on a whim (what a blessing and a curse to have a nursery that I can visit on my lunch break from work!). I am thinking of snuggling them into a border in my front yard, near some russian sage, heliopsis and balloon flowers. But now, back at work, I see that bee balm is considered pretty invasive... should I be worried? And now I'm questioning if these might be too many tall plants trying to spread out take up the same airspace (with the sage & heliopsis nearby, that is).
Anyway, I am a sucker for the flower on the picture and the fact that it's a native plant... anyone have any advice? Should I go for it or abort?