What plant hardiness zone is Lummi Island

Lummi Island is located at Whatcom County, Washington (WA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Lummi Island is 8b by the USDA scale.

Coldest zone's winter temperature is +15 … +20 °F.

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