Isn't this plant pretty? That is what I thought when I bought 2 plants a few years ago. Now it has taken over my front garden and is displacing many other plants. It sends shoots across underground and I'm not having any luck getting rid of it. It's growing in the periwinkle vinca now. Between these 2 and the bindweed that wraps itself around everything in sight I have a real mess out there. 96 degrees 2 days in a row so I'm not out fighting it right now.