Welcome to Gardenweb! On elephant ears, I think most people wait until frost kills the tops and then wait for a nice day to dig them up. Don't worry about it hurting your bulbs. They can stand some pretty cold temperatures and even this far north (Springfield area), they will sometimes return if you leave them in the ground all winter. But - when mine have made it through the winter in the ground, they didn't grow as well the next summer. I think they do better when I dig them up and store them. I have stored mine both in an unheated garage and also in my basement closet which is cool but not cold and they did fine both places. If you search this forum for elephant ears, you will find more info. Some people dig a hole to store theirs but our ground is rocky and I've never tried that. It's too much work to dig.

Nice sandy, is Muncie in southern Indiana? Are you sure you're not zone 6? I always hear about mulching even in zone 6 Pa here, or they will not come back. I guess you know your zone. I think I'll add some sand to my raised bed soil, just a bit. I'll be trying Cannas in the same bed, I just bought a bag with 3 roots in it, and the foliage is starting to come up. You know those bags of dried up plant roots/corms you can get at Wal-mart or anywhere in early spring, well, I just grabbed up a bag today, and as said the plants are starting to grow in the dark bag of dried (likely) peat, so I know their good. I will be putting soil in my raised bed tomorrow if the weather permits, you know, no rain. The temps here are warm as hell, 86 today, what happened to spring, it feels like summer. I have the bed, but need to put it together, then put the soil in it. I will put more sandy soil in 1 half of it, (it's got a divider in the middle) for my Cannas and a Eucomis or Pineapple lilly. They like drier soil. I have 3 Yuccas in a biggish pot. They are Yucca Gloriosa Varagieta, yucca Rostrata and yucca Recurvifolia. I'll just put the pot on the soil in the bed, they will need more sun than the site will have in the future. With the plants Musa included wanting dry soil, I should make a cover for the bed for winter. And put it on only after everything has dried out a bit in fall, just to keep rain out of the bed. Not to enclose it all on the sides too, that would encourage rot, just to keep rain out. Later.

My Banana's (Musa Basjoo) were fine outside this year and came back beautifully. I would say try to keep them above freezing. I did have 2 pups I put in my greenhouse, and they grew slowly all winter. The one outside died back and came back in the spring. My Dwarf Cavendish, I overwintered in the house, will put on my deck over the summer in a pot. I lost a Ice Cream Banana to cold, and none of my EE's made it. So I'm having to change up the EE plan this year. But as long as you don't drop below freezing, you should be fine. We had an unusually cold winter here this year, quite a few nights in the teens and even single digits.

Found this at Lowe's the other day labeled only as "Giant Elephant Ear" but it didn't have a species name with it. Could this be Thailand Giant? Can't wait to see how it turns out. https://www.gardenia.net/plant/colocasia-gigantea-thailand-giant