What plant hardiness zone is Coulee City

Coulee City is located at Grant County, Washington (WA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Coulee City is 6b by the USDA scale.

Coldest zone's winter temperature is −5 … 0 °F.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.

Coulee City, Washington @ wikipedia.