virginiarose said:Calif_Sue has a nice plant in the database. 
The picture above was taken in the San Francisco Botanical Garden, which rarely, gets frost.
The one I planted in my garden over 2 years ago is about 7 ft tall, I plan to cut it back soon so it will hopefully increase it's bushiness. Here is some more info:
http://www.anniesannuals.com/p...
I also just planted this one a couple of weeks ago, it can tolerate a bit lower zones:
http://www.anniesannuals.com/p...
and I would like to try this one too, I am a sucker for large interesting foliage!
http://www.anniesannuals.com/p...
