What plant hardiness zone is Valley Center

Valley Center is located at San Diego County, California (CA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Valley Center 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.