Should be possible, since they are tender perennials by nature. Not sure about watering during dormancy, but hope you tried to carry them over to this year. I've wondered about that being successful myself. Did you try? Showing any regrowth or still dormant?

I was just wondering the same thing! I grew mine from seed this year and they didn't start flowering until late August and now it's getting cold here in MA so I don't think they will last much longer outside.

Also, how do you overwinter you EEs? I am anxious to do this too since there are some amazing specimens at my local garden center on sale but I don't want to buy them and see them die next year.

I had elephant ears in my garden I planted 12. I just cut them back and they multiplied so that I had to send them out every 5 years