What plant hardiness zone is Sparwood

Sparwood is located at Regional District of East Kootenay, British Columbia (BC), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Sparwood 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.

Sparwood, British Columbia @ wikipedia.