What plant hardiness zone is Wollaston Lake

Wollaston Lake is located at Division No. 18, Saskatchewan (SK), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Wollaston Lake is 1a 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.

Wollaston Lake, Saskatchewan @ wikipedia.