Aaah ... but Hetty you live in the best part of the state for a yard full of Plumeria's! Here in the east central part of Florida we've been known to have prolonged freezes in the winter; not usual but it does happen on occasion and all it takes is once which is not good for Plumeria's and other "southern" tropicals! I have left some "tropicals" out for a few consecutive nights of mid 30's with just blankets over them for protection but if we were to have week after week of cold I'm afraid all would be lost.