Quote - in KY we can grow cabbage in winter is about all. It will freeze out in January usually though. Kale will survive somewhat. Turnips and turnip greens until about Dec.

If you can grow cabbage and kale try Swiss Chard. High yield and very hardy. May freeze up in winter but will still be good and will regrow after the snow melts in spring. Seeds produced are only viable on a plant at least 2 years old. Same as kale.