What plant hardiness zone is Boyle

Boyle is located at Athabasca County, Alberta (AB), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Boyle is 2b by the PHZ Canadian scale.

Also perennial plants from the equivalent USDA zone 1b with coldest winter temperature −48.3 … −45.6 °C and lower can be grown here.

Boyle, Alberta @ wikipedia.