The Elephant Ear (Colocasia) plant is perennial herb that grows up to 9 feet in height and sprouts large, arrow-shape leaves. It gets its name because the large leaves resemble the ears on an elephant. These plants make a great showing as a backdrop or a center of interest in any garden. Growing the showy, tropical Elephant Ear plant is possible even in cold weather zones. If temperatures average below about 40-45ºF (roughly 4-7ºC) for any extended period of time, the root system - tuber(s) - must be dug up and stored in a cool, dry place until replanted the following warm season.