https://www.ourfigs.com/forum/blueberry-home/1238943-my-ontario-non-fig-experiments/page2#post1407769
P. Caerula and Incarnata are being grown in Ontario here. Both seem to come back from the ground. THis is zone 5.
I am growing p. Incarnata in zone 6 massachusetts. It grows as an herbaceous perennial, but is very vigorous.