As you live in such a cold-winter climate, some containers can be brought indoors—for example, in an unheated garage. If kept outside, insulate your plants by mulching and wrapping in burlap. Blueberries are quite hardy and can survive winters. Move your containers against a building or into a protected area to keep them out of the wind. They don’t need to be watered much in wintertime; just make sure they don’t try out.
As you live in such a cold-winter climate, some containers can be brought indoors—for example, in an unheated garage. If kept outside, insulate your plants by mulching and wrapping in burlap. Blueberries are quite hardy and can survive winters. Move your containers against a building or into a protected area to keep them out of the wind. They don’t need to be watered much in wintertime; just make sure they don’t try out.