Developed in Minnesota, only Prunus x cistena is hardier (among purple-leaf plums).

For sure. I heard from Jeffries nurseries in Manitoba that they couldn’t keep them alive but in Millcreek in Edmonton they have had success I guess. I just wondered why it wasn’t being brought in more to replace the chokecherries if it was hardy. I believe the city has been planting a bunch as well now though so it’s begun.

Only negative thing I heard is that bugs love to destroy the leaves.