I do not even have to go out of my zone to loose plants. I loose plenty and they are all for zone 8 or better, I lost all my zone 8 plants last winter and it did not even get that cold here, we had a very mild winter.The big problem was rot, we get a lot of rain. I don't mind because I got most of them on a coop and they were dirt cheap, that is when I try new things. And talk about gambling, I have hostas! I love hostas, but most need a good cold spell, and it gets a bit tricky. Every year I loose at least 20 plants but every year I add at least 20 so it works out and I don't spend a lot of money on plants that need a good cold spell because that is the gamble here.
As long as I can get Foxgloves for 3.00 each then I will add a few every year, no problem.
Clint, maybe we should just pretend they are annuals so then we will be surprised when they come back. LOL.
Susie, I thought people up north do a lot of planting in pots so they can bring them inside during the winter? Do you do that, I have done that with tropical's but I don't like to.