Hardy and tropical are pretty much mutually exclusive terms. Your 7b hardiness zone leaves some fairly hardy choices such as white butterfly ginger and Japanese aralia (Fatsia) a bit out in the cold when winter comes. You might have good luck with cannas, Aucuba, Black Magic elephant ear, Grecian Pattern plant, one of the hardy bananas such as Hardy Fiber Banana (Musa basjoo) or Darjeeling Banana (Musa sikkimensis (M. hookeri)) and a few of the hardier palms such as needle palm.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips