Xanthosoma sagittifolium malanga American Taro. Elephant ear 3 rooted plants
3 rooted plants-Grows giant stalks and leaves. Arrowleaf is anherbaceous perennial that can grow 10-12' tall and the leaves can get 3-4' across. It can withstand temps in the 20's and 30's, but with leaf damage. They like rich, deep, moist but well drained soil in part shade to full sun.
I grow mine on the north and south sides of my house and the ones on the north side are in wet clay soil and grow enormous. The ones on the south side are in drier clay type soil and stay smaller and more compact. I also grow them just fine in containers as long as they get plenty of water and not allowed to dry out.