One plant that will not be melted are my hardy palms. They are hidden during the growing season by tropical plants that outgrow them, but they really start to shine this year when all the other greenery is just about gone. Here is my Trachycarpus.
Mandevilla vines are very tropical. A touch of frost will usually knock them out for good and they will not start producing buds until the weather starts getting hot (late June or so around here). However, they will not terminate buds in cold weather so the flower buds they made from summer so they look great well into the Fall. It probably will not be alive tomorrow morning but it looks perfect today.