I'm no expert Clematis grower, but I got a florida Seboldii and well, it wouldn't have lived in my zone, so I gave it to my sister who lives in Houston and the thing has really come into it's own and is as she puts it is "magnificent." Trust me, she doesn't thrill easily. :)
I've attached a link to it's description on Clematis on the Web.
http://www.clematis.hull.ac.uk...
Diann
