J. Griffin (Griff) Crump is a hybridizer in Alexandria Virginia who writes on the AIS blog. He is very neat to talk to and I have visited his garden several times. He wrote an article about protecting re-bloomers in the Fall from frost. I will try and find the article and provide a link. He has neat stuff.
Here is his url for his introductions.
http://www.pilmore.com/griffin...
My favorite is "Tessie the Tease". It is a great grower with tons of increases. It looks better in person than any picture can show (and that is saying something since there are a few really good pics of it).