Orange, CA planting zone & frost dates

Orange is in USDA hardiness zone 10b. Frost is rare here: in most years temperatures do not drop to 32°F.

USDA hardiness zone10bavg. extreme winter low 35°F to 40°F

FrostRarein most years the nearest weather station records no 32°F freeze

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 Orange

92856 zone 10b
92857 zone 10b
92859 zone 10a
92862 zone 10b
92863 zone 10b
92864 zone 10b
92865 zone 10b
92866 zone 10b
92867 zone 10b
92868 zone 10b
92869 zone 10b

Nearby cities

Santa Ana zone 10b
Tustin zone 10a
North Tustin zone 10b
Anaheim zone 10b
Placentia zone 10b
Garden Grove zone 10b
Yorba Linda zone 10a
Fullerton zone 10b

All cities in California → · Other zone 10b cities →

Questions

What growing zone is Orange, CA?

Orange 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 zone 10a.

Frost dates: NOAA U.S. Climate Normals 1991–2020, station Santa Ana Fire Stn, CA (USC00047888), 5.0 km (3.1 mi) from the city center, elevation 41 m, based on 28 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.