We tried to do something similar with different types of apple trees but between the dogs, the goats (that we no longer have), the chickens, and the cows we lost all the apple trees we planted. We've tried several times, and spent a small fortune on apple trees, before we figured out that it was futile to try to grow the trees where we were trying to grow them.
I hope your elephant ears are more successful than your banana plants. :D
God bless you and your wonderful family. :D Have an awesome day my fabulous friend! :D