I live in Indiana zone 5, I was wondering if I can plant more green beans bush or pole to get a fall harvest. I realized that I didn't plant nearly enough beans!!
I used to believe that I could plant bush beans at anytime in July for a fall harvest. After losing a planting once or twice to frost - I moved my sowing date up to "anytime before July 15th."
If you don't have a frost until about October 15th, I think you should give them a try. They will slow a bit with cool weather but I'm always surprised how these frost-tender plants can mature their crop during the cool winds and rain of autumn.
Pole beans are more "indeterminate" and you may get few or no beans. They are likely to be very busy vining . . . and then they will wake one frosty morning - dead!