RE: chufa
We plant chufa here and it is great for deer as well as turkeys. Glad we don't have hogs as they DO root up the little bulbs. It does come back every year if you plant enough to sustain the deer and turkeys.
It can't be planted unless you are sure that you have at least 100 days of warm weather.
You can read up on it for more details at NWTF website. If you are a member of NWTF, you can get some good deals on chufa and other products to plant for turkeys.
Good luck!