Fortunately, we do not have to worry about lack of snow cover most years unlike our counterparts in AB. Last winter was the coldes but also the snowiest in recent memory.
BJ in SW MB, Canadian Prairies, Zone 2b/3ish
I haven't been able to keep it alive after it bloome here. I suspect snow cover does the trick. At ground level under snow, it woulkd not feel the extremes of winter temperature.