Yes, it is time for a new project! According to Joanne Gailius we can grow sweet potatoes here so I'm going to give it a try.
Step one was putting the sweet potatoes into water so they can begin to grow slips. It is very important that you purchase organic so they haven't been sprayed to prevent sprouting. Time will tell if this will succeed. As I am food intolerant of regular potatoes I am really hoping this works, grow what you eat and eat what you grow after all.