Answer: Since your plant is already growing, it obviously doesn't care which way it has been planted. I'd leave it alone. For future reference, it really is difficult to tell which end should go up! It takes a little bit of investigation and some guesswork. Look at the tuber, one end should have a little more "hairiness" to it. That is the end that should be planted down. Also, one end may be slightly more tapered/pointy. That end goes up. If you really can't tell, plant the bulb sideways--the roots will find their way down, the shoots up.
If you were growing Elephant's ear (Alocasia) outdoors, it would be a summer foliage plant, and would need to be dug and stored in a cool place during the winter months. As long as it is growing indoors, it will be an evergreen perennial. The foliage is quite dramatic. Leaves are arrow-shaped, 12 to 16 inches long, olive green with a metallic sheen. It prefers temperatures above 65 degrees Fahrenheit; humid and warm condtions. Water only lightly in the winter when growth is slow.
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