What plant hardiness zone is San Diego

San Diego is located at Duval County, Texas (TX), USA.

Plant hardiness zone (winter frost zone or gardening zone) for San Diego is 9a by the USDA scale.

Coldest zone's winter temperature is +20 … +25 °F.

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