I dig up my elephant ear tubers each fall. Now I read about those that have a problem with their remaining tubers in the ground keep coming back each spring. Why dig them up each fall if they survive the winters in the ground?
Hardiness Zone: 5a
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I *think* it depends on your zone. I have one near a picture window that comes back every year, too (I'm in 7a). I just looked at a hardiness zone map, and your zone gets quite a bit colder than mine (-15 to -20 vs 5 to 0). If you want to give it a try, I'd suggest leaving only a couple in the ground for the first year. So you don't lose all of them if it's just too cold. Best of luck!
I agree with Mrs Story. Try leaving a couple in the ground but cover them good with lots of mulch of some kind. I also live in 7a/b and leave mine in the ground. I just cut them back (that's my job for tomorrow) and cover them up with leaves.
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