What plant hardiness zone is Smith River

Smith River is located at Del Norte County, California (CA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Smith River is 9b by the USDA scale.

Coldest zone's winter temperature is +25 … +30 °F.

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

Smith River, California @ wikipedia.