I used to grow Bird of Paradise in a 12 inch clay pot when I lived in Ohio. Mine started out as one of those little things tourists buy at Disney World, in a two inch plastic pot and about 5 or 6 inches tall. I had it for many years, I'm guessing at least 10 years in that clay pot. In the spring, when all danger of frost was gone, I would put it out on the front porch, which faced more or less east, if I remember right. I always put a shovelful of goat manure in the pot as a top dressing and the plant would present me with one spectacular flower spike in June or July. One year, someone told the local newspaper about my "strange flower" and they actually sent a reporter to take pictures of it. And of course, when the nights began to cool down, I made sure to move it back inside the house, in the sunniest spot possible, for the Autumn and Winter seasons.
In 1989 I moved to Florida and you can bet I made sure there was room in the truck for my Bird of Paradise plant! I moved to southwest Florida, on the Gulf of Mexico coast about midway between Sarasota and Fort Myers. That's zone 9a or 10, depending on how your map is set up. I put my baby outside in the middle of my parents' yard so it could feel the Florida sun on its leaves first thing in the morning.
There was a frost. It was a light frost, but a frost all the same.
Baby complained, leaves turned brown, but it survived. As soon as I got a home of my own, I planted the Bird of Paradise in my yard. It grew and grew.... but it never ever produced a flower spike.
There's got to be a moral here somewhere...