Elephant ears are warm-weather plants. Some will survive in-ground over the winter in zones as cold as 6, while others need to be dug up and stored for the winter unless planted in a zone 9 garden.
It always pays to check the cold hardiness information about the variety you’ve purchased. Bulbs can grow to be large, so if you can leave them in the ground, do.
Click the link to learn more about these amazing tropical plants.