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Hardiness Zone 10b
USDA hardiness zone 10b has an average coldest winter night of 35 to 40 °F (2 to 4 °C). On the 2023 map it covers ZIP codes in 4 states, mostly California, Florida and Hawaii. Cities in zone 10b include West Palm Beach, FL; Inglewood, CA; Santa Ana, CA.
Average coldest night
35 to 40 °F
2 to 4 °C
States with zone 10b
4
ZIP codes in zone 10b
752
Check your own zone
States in zone 10b
| State | ZIP codes | Share of state |
|---|---|---|
| California | 527 | 21% |
| Florida | 223 | 15% |
| Hawaii | 1 | 1% |
| Texas | 1 | <1% |
Cities in zone 10b
Larger places where every ZIP code is zone 10b.
- West Palm Beach, FL
- Inglewood, CA
- Santa Ana, CA
- Whittier, CA
- Torrance, CA
- Boynton Beach, FL
- Chula Vista, CA
- Cape Coral, FL
- Lake Worth, FL
- Huntington Beach, CA
- Newport Beach, CA
- Beverly Hills, CA
- Compton, CA
- Jupiter, FL
- Carson, CA
- Culver City, CA
- Downey, CA
- El Monte, CA
- La Mesa, CA
- San Pedro, CA
- Spring Valley, CA
- Bonita Springs, FL
- Stuart, FL
- City Of Industry, CA
Zones: 2023 USDA Plant Hardiness Zone Map ZIP code data, USDA Agricultural Research Service and the PRISM Climate Group, Oregon State University (official map). Place names: GeoNames (CC BY 4.0). Each ZIP code gets one zone, but a ZIP code can cross a zone line, and hills, valleys and towns can be warmer or colder than the zone shown.
About the Hardiness Zone Map
The Hardiness Zone Map finds your USDA plant hardiness zone, also called your planting or growing zone, from your ZIP code. Zones are based on the average coldest winter night of the year: each zone is 10 °F wide and split into a and b halves of 5 °F, from zone 1a in Alaska to 13b in Puerto Rico. Plant labels and seed packets give the coldest zone a plant can survive, so knowing your zone tells you which perennials, shrubs and trees can stay outside all winter. Zones come from the official 2023 USDA map ZIP code data for all 50 states, Washington DC and Puerto Rico.
How to use it
- 1 Enter your 5-digit ZIP code and press Find my zone.
- 2 Read your zone and the average coldest winter temperature it stands for.
- 3 Open your state to see its zones and the zone of every city.
- 4 Choose plants rated for your zone number or a colder (lower) one.
Frequently asked questions
What is the lowest temperature in zone 10b?
In zone 10b the coldest night of the year averages 35 to 40 °F (2 to 4 °C). That is an average over 1991–2020, so a hard winter can go lower.
Which states have zone 10b?
Zone 10b is found in California, Florida, Hawaii and Texas.
What is the difference between zone 10a and 10b?
Zone 10b is 5 °F warmer than 10a. Zone 10a has winter lows of 30 to 35 °F, and zone 10b 35 to 40 °F. Plant labels often give only the number, which covers both halves.
What plants grow in zone 10b?
Plants labelled hardy to zone 10 or colder (a lower number) should survive a zone 10b winter. Plants rated only for warmer zones may be damaged by frost unless grown in pots and brought in, or given shelter.
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