There are several ways to do it. Google it for suggestions.

First, it would be helpful if you could use botanical names. "Elephant ears" is a common name applied to several different plants and with very dissimilar growing conditions.

Assuming you mean alocasia or colocasia, both are frequently grown as houseplants, in which case the foliage is evergreen. They are very cold sensitive and can be damaged at temps below 50F . If grown outside during the summer months, they should be gradually conditioned to an indoor environment. Don't allow to dry out and provide indirect light.

Thank you gardengal48. I've never grown them & they were given to me. I didn't know the names.

If you are seeing some yellowing of the leaves, I suspect they would be just fine if you cut them back now since it's late in the year and you've already had a frost/freeze but if you want to be on the safe side, you could drag your container back outside for a few days as long as it's not going to get down in the single digits. And I think they would have better odds if you dig them up to store them rather than leaving them in the container to prevent rot.

An "unheated garage" can mean different things depending on where you live and how your garage is situated. Ours is on the north side of our house and it gets too cold in there to store some things. If we left bottled water or soda in our garage over winter, it would freeze solid on the coldest nights which would be too cold for elephant ear bulbs. I have better luck storing bulbs in our basement closet which is warmer than recommended but seems to work better than our colder than recommended garage.

I'll be buying new elephant ears in the spring because I took a chance and left mine in the ground last winter which sometimes works. It got down to 12 below which is a bit cold for zone 6b where I am and they were a no-show. They're not cheap. I should have dug them up.

I think that's what I'll do! Thank you so much, christie!

Many people dig the bulbs and store dormant over the winter, but I can't give advice on best method because I've not been successful at it; I haven't even tried in quite a few years.

They might overwinter in an unheated garage, but it's iffy. They are tropical plants, they can't take the really cold temps that we get here in the midwest -- if the bulbs freeze I'd say you can consider them goners.

I keep a large pot of EE (colocasia) and bring it inside to a fully enclosed but unheated porch for the winter. It is very rare for temps to go below 40 there, so it keeps growing, albeit slowly.