For me in the west palm area, mine has dropped leaves in winter if it gets in the 40's but leafs out quick, blooms most of the year. No rust problem. It grows tall and narrow. I have let mine grow to about 4' and kept cutting it back each spring to get a "standard" shape. The Breakers hotel in Palm beach has them in their front drive and I'm guessing they are about 12-15' tall.I find it an easy plant to grow, blooms if I fertilize and blooms if I don't, pretty much ignore it and it grows fine.