Sorry in advance for asking several questions. Just given a large elephant ear plant as a gift. It has what looks like two, thick separate stalks but could it be one tuber? I live in NYC, so I know the plant cannot be outside in the winter. I am considering planting it in a large aluminum container rather than in the ground so I can bring it indoors for the winter. Do you advise that? Is it possible to keep it indoors and continue to grow? Is it better to cut it down or let the leaves die and store it in my basement, although it can get cold there also? Thank you for your help in advance.