'Billie Green' is only about six months from a 2" start in this photo! So I expect this one to become a good sized bush in my area. Except that I made the mistake of not covering it when I did cover others, at it was severly burned by a freeze this winter. Some need to be covered and some don't. This one does. Don't quote me on this, but I believe the Triphylla tpes (long orange tinged corollas such as Gartenmeister Bonstadt) are more sensitive to cold snaps. It started to recover immediately afterwards though and will be blooming again soon. The 'Beauty of Cliff Hall' right next to it, didn't notice there was a couple of freezes at all!