What plant hardiness zone is Copper River

Copper River is located at Regional District of Kitimat-Stikine, British Columbia (BC), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Copper River is 7a by the PHZ Canadian scale.

Plants of 7a PHZ hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7a PHZ.

Also perennial plants from the equivalent USDA zone 6a with coldest winter temperature −23.3 … −20.6 °C and lower can be grown here, see list of plants for 6a USDA winter zone.

Copper River @ wikipedia.