Madeline, stick with late maturing soybean. I have some late maturing Roundup Ready Forage Soybeans that can be planted late and still produce excellent biomass. I will send you a bag to try. PM me with your address if you are interested. The late planted corn may produce a very small cob, if the worms don't get it first. The soybeans will stay green until frost, but will still produce pods for the deer to munch on in late winter.