I've found that most US brugs are very similar in their ability to survive winters in my garage, so they should do well in your area outside. If it gets cold enough to frost, you might lose leaves, but they should come back okay. If the trunks freeze, the plants should still come back from the roots. As for finding plants that are similar to Charles Grimaldi or Dr. Suess and the way they grow and bloom....I would say that Butterfly is a super pink brug that blooms its heart out and smells like baby powder. Golden Lady is a wonderful double cream color that smells awesome and blooms like crazy. A nice versicolor orange or peach would make anyone happy with tons of heavy flushes and fragrance that can't be beat. Versicolors do bloom all at once, for the most part, and then will repeat bloom throughout the year. There are just lots and lots of beautiful blooms out there and I would suggest you go to one of the brug sites and look at their galleries to get an idea of what brugmansia you want to grow. Just do a search for BGI or ABADS to find them. Just remember than some are not in the US yet. Oh...I have to say that since I've grown Rothkirch, it is at the top of my list for looks, growth, and fragrance and rarely has a bug problem.

ChSam (Shirley Morr)
Chariton, Iowa
Zone 5