Thanks so much for the input, I think you're right.
I'll just have to be content with all the tropicals I can grow that northern climates cannot. It's just that my goal in life is to grow one of everything before I die....HA!
I started gardening with my dad at age 4-5 in Lexington Kentucky and learned to love things like lilacs, columbines, peonies, iris, and other things that grow in colder climates. When I moved to Florida the rules changed dramatically and I had to learn what would grow here instead. I've been here almost 40 years and I'm still learning.