South Pasadena, CA planting zone & frost dates
South Pasadena is in USDA hardiness zone 10a. Frost is rare here: in most years temperatures do not drop to 32°F.
USDA hardiness zone10aavg. extreme winter low 30°F to 35°F
FrostRarein most years the nearest weather station records no 32°F freeze
Useful for zone 10a 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 South Pasadena
- 91030 zone 10a
- 91031 zone 10a
Nearby cities
- Alhambra zone 10a
- Pasadena zone 10b
- San Marino zone 10a
- San Gabriel zone 10a
- Monterey Park zone 10b
- Altadena zone 10b
- Rosemead zone 10b
- La Cañada Flintridge zone 10a
Questions
What growing zone is South Pasadena, CA?
South Pasadena is in USDA Plant Hardiness Zone 10a (average extreme winter low 30°F to 35°F), according to the USDA 2023 map.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Pasadena, CA (USC00046719), 3.6 km (2.2 mi) from the city center, elevation 263 m, based on 25 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.