Yes, but they have about the same hardiness. I grow A. lophantha 'Splendid' here in zone 6b/7a but I'm a bit of a zone pusher with that. However, my small one is doing just fine with a slight bit of winter protection to be on the safe side..
That means I might have a chance at keeping one alive outdoors year round. Thanks for the information Tee. : )
I can put it on my covered porch for winter. It will get 1/2 day of sun.
One more question. Do you water it in the winter?