Help! What Can I Do?? My uncle has a small Banana tree on his backyard. It have...

My uncle has a small Banana tree on his backyard. It have growned a lot! But resembling we all immediately, winter is aproaching. In just 4 days the plants hold turned from a beautiful green, to a motionless brown. What can he do to preserve the small tree so that it will begin to grow plants again subsequent spring or summer?

BTW it has not giving fruit on the other hand.
Is at least 6 foot or bigger.
Answers:    We have plenty of them surrounded by our back patio. Most likely they will rime, since they are about 80% hose down. Don't worry though. Banana trees multiply and don't be surprised if subsequent year there are approaching 5 more growing.
Now I can't get rid of them.
i enjoy no idea, vote me for best answer