San Antonio, Texas is in USDA Hardiness Zones 8b and 9a

San Antonio, Texas Hardiness Zone Map

San Antonio Border
Zone 8b
15°F to 20°F
Zone 9a
20°F to 25°F

A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone.

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