SoCal2warm

Olympia, WA, here and the Winter before last year (2017-2018 ) was unusually mild here on the West Coast. (This was the same year you had a devastating freeze on the East Coast that killed back a lot of long-established plants)

The Musa basjoo, which is a fairly common ornamental planted in people's yards around here, did not die to the ground that Winter, in fact the leaves still seemed to be alive by the end of January (although the big fronds looked pretty wilty and kind of trashed). There were big camellia bushes in bloom on New Years Day.
This Winter (2018-2019 ) however, all the bananas seemed to die to the ground. It was a colder Winter than usual.
zone 8a here