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Hardiness Zone 10a
USDA hardiness zone 10a has an average coldest winter night of 30 to 35 °F (-1 to 2 °C). On the 2023 map it covers ZIP codes in 6 states, mostly California, Florida and Texas. Cities in zone 10a include Orlando, FL; Sarasota, FL; San Bernardino, CA.
Average coldest night
30 to 35 °F
-1 to 2 °C
States with zone 10a
6
ZIP codes in zone 10a
1,234
Check your own zone
States in zone 10a
Cities in zone 10a
Larger places where every ZIP code is zone 10a.
- Orlando, FL
- Sarasota, FL
- San Bernardino, CA
- Glendale, CA
- Van Nuys, CA
- Clearwater, FL
- Berkeley, CA
- North Hollywood, CA
- Fort Pierce, FL
- Burbank, CA
- Melbourne, FL
- Vero Beach, FL
- Ventura, CA
- Kissimmee, FL
- Oceanside, CA
- Richmond, CA
- Palm Bay, FL
- Port Saint Lucie, FL
- Winter Haven, FL
- Corona, CA
- Northridge, CA
- Lehigh Acres, FL
- North Port, FL
- Punta Gorda, FL
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 10a?
In zone 10a the coldest night of the year averages 30 to 35 °F (-1 to 2 °C). That is an average over 1991–2020, so a hard winter can go lower.
Which states have zone 10a?
Zone 10a is found in California, Florida, Texas, Arizona, Louisiana and Nevada.
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 10a?
Plants labelled hardy to zone 10 or colder (a lower number) should survive a zone 10a 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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