What plant hardiness zone is Lake Cowichan

Lake Cowichan is located at Cowichan Valley Regional District, British Columbia (BC), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Lake Cowichan is 8a by the PHZ Canadian scale.

Plants of 8a PHZ hardiness zone suitable for outdoor gardening and growing in this winter frost zone 8a PHZ.

Also perennial plants from the equivalent USDA zone 7a with coldest winter temperature −17.8 … −15 °C and lower can be grown here, see list of plants for 7a USDA winter zone.

Lake Cowichan, British Columbia @ wikipedia.