It might just recover on its own as it gets warmer. Apply complete fertilizer like 16-16-16, 1 tbsp to a gallon and use that to water every time until it gets colder again, then use unfertilized water the entire winter, sparingly watering the plant.

they are probably needing more water and fertilizer, unless your soil is holding water,then they probably need less water. Usually in TN by this time of the year its pretty dry though, so excessive water is most likely not the cause. Definitely not too late this year, you have until october to grow them.

Matt, yes it's been growing slowly but consistently this winter. I had a fungus fly problem and determined larvae were probably eating away at the roots causing the outer psuedostem to rot. I poured in a hydrogen peroxide solution and trimmed the leaf down past the black discoloration, the peroxide worked wonders, the flies pretty much vanished. Left on vacation and came back 5 days later, the petiole had not done any further rotting, and a new leaf was coming out of the center.

Thanks guys! I made the hole in the bottom a little bit bigger and I have to admit when I felt the soil it through the bottom was kind of muddy. I always heard that bananas were heavy feeders and I thought that meant that they need a lot of water but now I find out it's fertilizer that they need a lot of ( I think) Apr-Sept they get direct sunlight between 10 and 3 and filter light ( through surrounding trees) about four hours before and four hours after that. They have to spend 6 to 7 months indoors the rest of the year.