Doing a little research on this gives conflicting stories about it's hardiness. I've seen everything from 10 to 20 degrees and one site said it was hardy to zone 7 which takes it down to 0 but I doubt that site is accurate. If you're set on getting one, be sure to put it in a very protected spot with southern exposure. And if you see that it's going to be below 20 you might cover it with a fabric drop cloth or old blanket for a night or so.