What plant hardiness zone is Dawson

Dawson is located at Yukon Territory (YT), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Dawson is 0a by the PHZ Canadian scale.

Also perennial plants from the equivalent USDA zone 0a with coldest winter temperature < −53.9 °C and lower can be grown here.

Dawson, Yukon Territory @ wikipedia.