Hi,
I have 'Brown Turkey' here in south central WI z5a also. I have overwintered it for 3 years with no problem. Follow the plants cues for dormancy -keep it in the coolest room of your house --if it has leaves water normally --when the leaves start to yellow and drop very little to no water---The Problem is the fruit- the season just isnt long enough for it to mature. When it has to come in for the winter the fruit just drops off :(
Mike
