Nice! This one is just over 3 feet tall right now. Not sure if it will get taller, but I wouldn't be at all surprised if it did. I really do love it, but I think they expand too much for where it's at. Whoever planted stuff around here did not use their brain!
Do you cut the flowers and stems off when they are done, and do they grow more flowers? It's what I have read, but haven't had any experience with them myself. The one I planted in Utah had only been in the ground for 6 months or so before we moved. I meant to dig it up and bring it with me, but I forgot to do that.