Hey Debbie.
Welcome to the Garden.
alankhart nailed it. They don't tolerate the cold.
I wish I could grow them here where I now live. When I was in the south I had green ones, pink ones, red ones, yellow ones, veined ones with a mix of colors, splotched ones with a mix of colors.
You do need to thin them out during the winter. The are so beautiful.
I had one leaf that measured 27 inches long and 22 inches wide. Pretty big for the types I had, 'course I feed the too.
Anyway, welcome and enjoy your beautiful
plants.