San Diego, CA planting zone & frost dates
San Diego is in USDA hardiness zone 10b. Frost is rare here: in most years temperatures do not drop to 32°F.
Useful for zone 10b gardens
- Drip irrigation kit — saves water in long, hot seasons
- Shade cloth — protects plants from midday sun
- Soil moisture meter
- Plants for zone 10
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Hardiness zone by ZIP code in San Diego
- 92101 zone 11a
- 92102 zone 10b
- 92103 zone 10b
- 92104 zone 10b
- 92105 zone 10b
- 92106 zone 10b
- 92107 zone 10b
- 92108 zone 10b
- 92109 zone 10b
- 92110 zone 10b
- 92111 zone 10b
- 92112 zone 10b
- 92113 zone 10b
- 92114 zone 10b
- 92115 zone 10b
- 92116 zone 10b
- 92117 zone 10b
- 92119 zone 10b
- 92120 zone 10b
- 92121 zone 10b
- 92122 zone 10b
- 92123 zone 10b
- 92124 zone 10b
- 92126 zone 10b
- 92127 zone 10a
- 92128 zone 10a
- 92129 zone 10a
- 92130 zone 10b
- 92131 zone 10b
- 92132 zone 11a
- 92135 zone 11a
- 92136 zone 10b
- 92137 zone 11a
- 92138 zone 11a
- 92139 zone 10b
- 92140 zone 11a
- 92142 zone 10b
- 92145 zone 10b
- 92147 zone 11a
- 92149 zone 10b
- 92150 zone 10a
- 92153 zone 10b
- 92154 zone 10b
- 92155 zone 10b
- 92158 zone 10b
- 92159 zone 10b
- 92160 zone 10b
- 92161 zone 10b
- 92163 zone 10b
- 92165 zone 10b
- 92166 zone 10b
- 92167 zone 11a
- 92168 zone 10b
- 92169 zone 10b
- 92170 zone 10b
- 92171 zone 10b
- 92172 zone 10a
- 92174 zone 10b
- 92175 zone 10b
- 92176 zone 10b
- 92177 zone 10b
- 92179 zone 10b
- 92182 zone 10b
- 92186 zone 11a
- 92187 zone 11a
- 92191 zone 10b
- 92192 zone 10b
- 92193 zone 10b
- 92195 zone 10b
- 92196 zone 10b
- 92197 zone 10a
- 92198 zone 10a
- 92199 zone 10a
Nearby cities
- Coronado zone 10b
- National City zone 10b
- Chula Vista zone 10b
- Lemon Grove zone 10b, last frost Jan 6
- Imperial Beach zone 10b
- Bonita zone 10b
- La Mesa zone 10b, last frost Jan 6
- La Presa zone 10b
Questions
What growing zone is San Diego, CA?
San Diego is in USDA Plant Hardiness Zone 10b (average extreme winter low 35°F to 40°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zones 10a, 11a.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station San Diego Lindbergh Fld, CA (USW00023188), 2.6 km (1.6 mi) from the city center, elevation 5 m, based on 27 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.