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This article will help with caring for the plant: https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/growing-elephant-ear-plants.htm

In your area, a good layer of mulch to offer adequate winter protection for the plant.

This article should help: https://www.gardeningknowhow.com/plant-problems/pests/insects/grasshopper-control.htm

They should come up again for you, but they likely will not get to their large size as usual. But they will be better off in the ground than being stored until next year as being in the ground will allow them to store energy to make it through the winter.

Let the foliage die back naturally before digging them up and then trim the stem back to about 3 inches from above the tuber. The tubers can then be removed and stored. Wrap them in newspaper and store them in a cool, dry place. In the spring, they can be planted out in your garden (and dug up again in fall). This article will help with storing your elephant ear tubers: https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/storing-elephant-ear-bulbs.htm

If you live in zone 8 or greater, these bulbs can be left in the ground year round. If you live in a zone lower, they need to be brought in for the winter as they will not survive year round outside.

It is better to let the foliage die back naturally. But if time is of the essence, you can trim the stem/foliage back to about 3 inches from above the bulb. This article will help you: https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/storing-elephant-ear-bulbs.htm