Q.Bannana tree
How do you look after Banana tree in the winter…Banana is on the ground.

Certified GKH Gardening Expert
This depends on where you are located. In winter some bananas are hardy where other are not. There are ways to weather them for the winter that include simply covering them, to digging them up, depending on how cold it gets in your area. Here is an article that will give you more information on the banana: https://www.gardeningknowhow.com/edible/fruits/banana/banana-plants-in-winter.htm