What plant hardiness zone is Roy

Roy is located at Strathcona Regional District, British Columbia (BC), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Roy is 9a by the PHZ Canadian scale.

Plants of 9a PHZ hardiness zone suitable for outdoor gardening and growing in this winter frost zone 9a PHZ.

Also perennial plants from the equivalent USDA zone 8a with coldest winter temperature −12.2 … −9.4 °C and lower can be grown here, see list of plants for 8a USDA winter zone.

Roy, British Columbia @ wikipedia.