I recall the first time we saw Elephant Ears, otherwise known as Colocasia esculenta from the Araceae family down in Florida. The leafs are huge and can grown anywhere from 7. to almost 60 inches! I included a picture, in case you have never seen one before. I should really snap a few pictures. when I am out on my walk by the nearby forest preserve, as they are everywhere. It is invasive and threatens other native wetland plants.