What plant hardiness zone is Fort Vermilion

Fort Vermilion is located at Mackenzie County, Alberta (AB), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Fort Vermilion is 2a by the PHZ Canadian scale.

Also perennial plants from the equivalent USDA zone 1a with coldest winter temperature −51.1 … −48.3 °C and lower can be grown here.

Fort Vermilion, Alberta @ wikipedia.