I wish I had a clue what this one is. I planted it in one of the flower boxes. It's really tall and doesn't blend in with the rest of the flowers. I pulled up three others but this one is so firmly rooted that I decided to let it bloom to see what it was. I think I'll let it go to seed, gather the seeds and then get rid of this one. It has stickers on it...not really thorns, but not smooth.