Figs, Italians and NYC- its a SET! Drive through any decent part of NYC in winter and there's these weird blue statue looking things in everyone's yards- and it turns out they are fig trees wrapped up in tarps.
Don't worry, it doesn't have to be a blue tarp, you can use any color you want, lol, but you have to keep the frost off them. I don't know why It works in a six zone, becasue eventually the branches will freeze solid, wrap or no, when we get a week of sub freezing temps, but it does work. They only fruit from mature branches. If you let those branches freeze every winter you'll never get fruit. Saving the roots isn't enough.