What plant hardiness zone is San Francisco

San Francisco is located at County of San Francisco, California (CA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for San Francisco is 10b by the USDA scale.

Coldest zone's winter temperature is +35 … +40 °F.

Plants of 10b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 10b USDA.