According to Wikipedia, where I got this picture, this is a pretty version of the plant. When I lived in Colorado, I saw a lot of these
All I can remember is my roommate Mike with his jeep, tying off the plant, yanking it out (and leaving rubber on the road) in front of our house. He had a HUGE plant that he pulled away. And next year, the damn thing grew again.
The leaves were sharp, drew blood and it gave off an odor. Not an unpleasant one, but pervasive. The rabbits used to hide in the bushes to get away from my cat. I remember not liking the plant, but now I'm wondering if it would grow up here. Probably too wet. But they would be useful as a natural fence.