What plant hardiness zone is Lac la Hache

Lac la Hache is located at Cariboo Regional District, British Columbia (BC), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Lac la Hache is 4a by the PHZ Canadian scale.

Plants of 4a PHZ hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4a PHZ.

Also perennial plants from the equivalent USDA zone 3a with coldest winter temperature −40 … −37.2 °C and lower can be grown here, see list of plants for 3a USDA winter zone.

Lac la Hache, British Columbia @ wikipedia.