Actually, going by minimum night temperature, it zone 16. haha. I grew up in a poorly heated house near Washington D.C. I hated cold from when I was born, i believe. I just about froze yesterday while in a Dr.'s oddice for two hours! Just a checkup. It must have been 65 in there!
But then you get to grow peaches, blueberries and strawberries and blackberries. Grrrr. Too warm here, they need to go dormant. I have considered building a small air conditioned greenhouse! hahahaha
gotta have a flower----