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Elephant ears is a common name for similar looking tropical plants grown for their large, heart-shaped leaves. Taro is one of them and typically has smaller leaves than the elephant ears. Taro is used as a food crop in Hawaii, for example, as poi. It's very important to cook it properly. Here is more information:
Here is more information:
https://wimastergardener.org/article/elephant-ears-colocasia-alocasia-and-xanthosoma/
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/elephant-ear-plant-types.htm
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/growing-taro-root-for-food.htm