Answer: Elephant ear, Colocasia esculenta, is grown from large, round to oval, brown tubers or from rooted plants. The tubers can be placed directly outdoors between 2 and 3 inches deep after the danger of frost has passed (mid-May) or started indoors in large pots in March. Elephant ear performs best in moist soils. Water plants in containers and beds regularly during dry weather. They are also heavy feeders. Apply a slow-release fertilizer to the soil or periodically fertilize with a water soluble product.
Elephant ear thrives in partial shade. It can also be grown in full sun if it is kept consistently moist. Elephant ear can be used as background plants in flower beds and as marginal plants around ponds. Elephant ear can also be grown in large containers.
Elephant Ear will not survive the winter outdoors. The plant must be dug in the fall and stored indoors over winter. Cut the plants back to within 2 to 4 inches of the ground a few days after the first frost. Carefully dig the plants with a spade or potato fork. Allow the base to dry for a day so that they are dry to the touch. Store them in peat moss or vermiculite in the coolest part of the house, typically the basement or a crawlspace. Because of our short growing season, elephant ear may not form large tubers or food reserve in the swollen base to successfully survive the winter in storage. Container grown plants can be overwintered by placing them in a cool porch or basement.
Hope this answers all your questions.
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