I have had the big Alocasia, possibly portora, which I have shared. I have not tried keeping it in ground thru winter. I feel like the top main bud would freeze and start a nasty rot in the trunk.
I keep mine in a huge blue pot and pull it out come fall, for winter storage. I mean, remove entirely from that pot to shake off the soil, them prop in a smaller pot. Or break off pups. Been thru this a number of years now.
I have also kept a black Colocasia, probably Black Runner, and Have had that survive winter a couple times in some form, sprouts from the runners.