You are welcome Julia. I found your post to be most helpful. Thank you.
I didn't state that very well. I winter mine on my covered porch, not under my porch.
Here's what has lasted now at least 4 years.
Secret Lust
Secret Romance
Amazing Dream
Green Eyes
I got PowWow Wild Berry and Sombrero Lemon Yellow last year, and so far, so good. Except Sombrero Lemon Yellow gets weird blooms all the time. Some of the petals will be longer on one side then on the other. I'll have to take a pic to show you what I mean.
I'm thinking they should have tried correcting this through their breeding before releasing it? Or maybe I just got an odd plant? Any viruses that cause this sort of thing?
I got Julia and Virgin this year because I had heard they last longer than some others, so we'll see? Pictures of Virgin knocked me off my feet!