Planting zones by state
California Planting Zones
California runs from zone 5b to zone 11a on the 2023 USDA map. Zone 9b is the most common, covering 34% of the state's ZIP codes. San Diego is 10b, Los Angeles is 10b, San Francisco is 10a and Sacramento is 9b.
Zones across California
| Zone | Average coldest night | Share of California ZIP codes |
|---|---|---|
| 5b | −15 to −10°F | under 1% |
| 6a | −10 to −5°F | under 1% |
| 6b | −5 to 0°F | 2% |
| 7a | 0 to 5°F | 2% |
| 7b | 5 to 10°F | under 1% |
| 8a | 10 to 15°F | 1% |
| 8b | 15 to 20°F | 4% |
| 9a | 20 to 25°F | 9% |
| 9b | 25 to 30°F | 34% |
| 10a | 30 to 35°F | 24% |
| 10b | 35 to 40°F | 21% |
| 11a | 40 to 45°F | 1% |
Planting zone for every city and town in California
Each California town uses the ZIP code at its center. Big towns can cross into the next half-zone, so look up your own ZIP if you're near a line.
| City | Zone | Average coldest night |
|---|---|---|
| Adelanto | 8b | 15 to 20°F |
| Agoura Hills | 10b | 35 to 40°F |
| Alameda | 10a | 30 to 35°F |
| Albany | 10a | 30 to 35°F |
| Alhambra | 10a | 30 to 35°F |
| Aliso Viejo | 10b | 35 to 40°F |
| Alturas | 6b | −5 to 0°F |
| Amador City | 9b | 25 to 30°F |
| American Canyon | 9b | 25 to 30°F |
| Anaheim | 10a | 30 to 35°F |
| Anderson | 9a | 20 to 25°F |
| Angels | 9a | 20 to 25°F |
| Antioch | 9b | 25 to 30°F |
| Apple Valley | 8b | 15 to 20°F |
| Arcadia | 10a | 30 to 35°F |
| Arcata | 9b | 25 to 30°F |
| Arroyo Grande | 10a | 30 to 35°F |
| Artesia | 10a | 30 to 35°F |
| Arvin | 9b | 25 to 30°F |
| Atascadero | 9a | 20 to 25°F |
| Atherton | 9b | 25 to 30°F |
| Atwater | 9a | 20 to 25°F |
| Auburn | 9b | 25 to 30°F |
| Avalon | 10b | 35 to 40°F |
| Avenal | 9b | 25 to 30°F |
| Azusa | 10a | 30 to 35°F |
| Bakersfield | 9b | 25 to 30°F |
| Baldwin Park | 10a | 30 to 35°F |
| Banning | 9b | 25 to 30°F |
| Barstow | 9a | 20 to 25°F |
| Beaumont | 9b | 25 to 30°F |
| Bell | 10b | 35 to 40°F |
| Bell Gardens | 10b | 35 to 40°F |
| Bellflower | 10b | 35 to 40°F |
| Belmont | 10a | 30 to 35°F |
| Belvedere | 10a | 30 to 35°F |
| Benicia | 9b | 25 to 30°F |
| Berkeley | 10a | 30 to 35°F |
| Beverly Hills | 10b | 35 to 40°F |
| Big Bear Lake | 7b | 5 to 10°F |
| Biggs | 9b | 25 to 30°F |
| Bishop | 7a | 0 to 5°F |
| Blue Lake | 9b | 25 to 30°F |
| Blythe | 9b | 25 to 30°F |
| Bradbury | 10a | 30 to 35°F |
| Brawley | 9b | 25 to 30°F |
| Brea | 10a | 30 to 35°F |
| Brentwood | 9b | 25 to 30°F |
| Brisbane | 10a | 30 to 35°F |
| Buellton | 10a | 30 to 35°F |
| Buena Park | 10a | 30 to 35°F |
| Burbank | 10a | 30 to 35°F |
| Burlingame | 10a | 30 to 35°F |
| Calabasas | 10b | 35 to 40°F |
| Calexico | 10a | 30 to 35°F |
| California City | 8b | 15 to 20°F |
| Calimesa | 9b | 25 to 30°F |
| Calipatria | 9b | 25 to 30°F |
| Calistoga | 9b | 25 to 30°F |
| Camarillo | 10a | 30 to 35°F |
| Campbell | 9b | 25 to 30°F |
| Canyon Lake | 9b | 25 to 30°F |
| Capitola | 9b | 25 to 30°F |
| Carlsbad | 10b | 35 to 40°F |
| Carmel-by-the-Sea | 10a | 30 to 35°F |
| Carpinteria | 10b | 35 to 40°F |
| Carson | 10b | 35 to 40°F |
| Cathedral City | 10a | 30 to 35°F |
| Ceres | 9b | 25 to 30°F |
| Cerritos | 10a | 30 to 35°F |
| Chico | 9b | 25 to 30°F |
| Chino | 9b | 25 to 30°F |
| Chino Hills | 10a | 30 to 35°F |
| Chowchilla | 9a | 20 to 25°F |
| Chula Vista | 10b | 35 to 40°F |
| Citrus Heights | 9b | 25 to 30°F |
| Claremont | 10a | 30 to 35°F |
| Clayton | 9b | 25 to 30°F |
| Clearlake | 9a | 20 to 25°F |
| Cloverdale | 9b | 25 to 30°F |
| Clovis | 9b | 25 to 30°F |
| Coachella | 10a | 30 to 35°F |
| Coalinga | 9b | 25 to 30°F |
| Colfax | 9a | 20 to 25°F |
| Colma | 10a | 30 to 35°F |
| Colton | 10a | 30 to 35°F |
| Colusa | 9b | 25 to 30°F |
| Commerce | 10b | 35 to 40°F |
| Compton | 10b | 35 to 40°F |
| Concord | 9b | 25 to 30°F |
| Corcoran | 9a | 20 to 25°F |
| Corning | 9b | 25 to 30°F |
| Corona | 10a | 30 to 35°F |
| Coronado | 10b | 35 to 40°F |
| Corte Madera | 10a | 30 to 35°F |
| Costa Mesa | 10b | 35 to 40°F |
| Cotati | 9a | 20 to 25°F |
| Covina | 10a | 30 to 35°F |
| Crescent City | 9b | 25 to 30°F |
| Cudahy | 10b | 35 to 40°F |
| Culver City | 10b | 35 to 40°F |
| Cupertino | 9b | 25 to 30°F |
| Cypress | 10a | 30 to 35°F |
| Daly City | 10a | 30 to 35°F |
| Dana Point | 10b | 35 to 40°F |
| Danville | 9b | 25 to 30°F |
| Davis | 9b | 25 to 30°F |
| Del Mar | 10b | 35 to 40°F |
| Del Rey Oaks | 10a | 30 to 35°F |
| Delano | 9b | 25 to 30°F |
| Desert Hot Springs | 10a | 30 to 35°F |
| Diamond Bar | 10a | 30 to 35°F |
| Dinuba | 9b | 25 to 30°F |
| Dixon | 9b | 25 to 30°F |
| Dorris | 6b | −5 to 0°F |
| Dos Palos | 9a | 20 to 25°F |
| Downey | 10b | 35 to 40°F |
| Duarte | 10a | 30 to 35°F |
| Dublin | 9b | 25 to 30°F |
| Dunsmuir | 8a | 10 to 15°F |
| East Palo Alto | 10a | 30 to 35°F |
| Eastvale | 10a | 30 to 35°F |
| El Cajon | 10a | 30 to 35°F |
| El Centro | 10a | 30 to 35°F |
| El Cerrito | 10a | 30 to 35°F |
| El Monte | 10b | 35 to 40°F |
| El Paso de Robles (Paso Robles) | 9a | 20 to 25°F |
| El Segundo | 10b | 35 to 40°F |
| Elk Grove | 9b | 25 to 30°F |
| Emeryville | 10a | 30 to 35°F |
| Encinitas | 10a | 30 to 35°F |
| Escalon | 9b | 25 to 30°F |
| Escondido | 10a | 30 to 35°F |
| Etna | 8a | 10 to 15°F |
| Eureka | 9b | 25 to 30°F |
| Exeter | 9b | 25 to 30°F |
| Fairfax | 9b | 25 to 30°F |
| Fairfield | 9b | 25 to 30°F |
| Farmersville | 9b | 25 to 30°F |
| Ferndale | 9b | 25 to 30°F |
| Fillmore | 10a | 30 to 35°F |
| Firebaugh | 9b | 25 to 30°F |
| Folsom | 9b | 25 to 30°F |
| Fontana | 10a | 30 to 35°F |
| Fort Bragg | 9b | 25 to 30°F |
| Fort Jones | 8a | 10 to 15°F |
| Fortuna | 9b | 25 to 30°F |
| Foster City | 10a | 30 to 35°F |
| Fountain Valley | 10b | 35 to 40°F |
| Fowler | 9b | 25 to 30°F |
| Fremont | 10a | 30 to 35°F |
| Fresno | 9b | 25 to 30°F |
| Fullerton | 10b | 35 to 40°F |
| Galt | 9b | 25 to 30°F |
| Garden Grove | 10b | 35 to 40°F |
| Gardena | 10b | 35 to 40°F |
| Gilroy | 9b | 25 to 30°F |
| Glendale | 10a | 30 to 35°F |
| Glendora | 10a | 30 to 35°F |
| Goleta | 10a | 30 to 35°F |
| Gonzales | 9b | 25 to 30°F |
| Grand Terrace | 10a | 30 to 35°F |
| Grass Valley | 9a | 20 to 25°F |
| Greenfield | 9b | 25 to 30°F |
| Gridley | 9b | 25 to 30°F |
| Grover Beach | 10a | 30 to 35°F |
| Guadalupe | 10a | 30 to 35°F |
| Gustine | 9b | 25 to 30°F |
| Half Moon Bay | 10a | 30 to 35°F |
| Hanford | 9a | 20 to 25°F |
| Hawaiian Gardens | 10a | 30 to 35°F |
| Hawthorne | 10b | 35 to 40°F |
| Hayward | 10a | 30 to 35°F |
| Healdsburg | 9b | 25 to 30°F |
| Hemet | 9b | 25 to 30°F |
| Hercules | 9b | 25 to 30°F |
| Hermosa Beach | 11a | 40 to 45°F |
| Hesperia | 8b | 15 to 20°F |
| Hidden Hills | 10a | 30 to 35°F |
| Highland | 10a | 30 to 35°F |
| Hillsborough | 10a | 30 to 35°F |
| Hollister | 9b | 25 to 30°F |
| Holtville | 10a | 30 to 35°F |
| Hughson | 9b | 25 to 30°F |
| Huntington Beach | 10b | 35 to 40°F |
| Huntington Park | 10b | 35 to 40°F |
| Huron | 9b | 25 to 30°F |
| Imperial | 10a | 30 to 35°F |
| Imperial Beach | 10b | 35 to 40°F |
| Indian Wells | 10a | 30 to 35°F |
| Indio | 10a | 30 to 35°F |
| Industry | 10a | 30 to 35°F |
| Inglewood | 10b | 35 to 40°F |
| Ione | 9b | 25 to 30°F |
| Irvine | 10a | 30 to 35°F |
| Irwindale | 10a | 30 to 35°F |
| Isleton | 9b | 25 to 30°F |
| Jackson | 9b | 25 to 30°F |
| Jurupa Valley | 10a | 30 to 35°F |
| Kerman | 9a | 20 to 25°F |
| King City | 9a | 20 to 25°F |
| Kingsburg | 9b | 25 to 30°F |
| La Canada Flintridge | 10a | 30 to 35°F |
| La Habra | 10a | 30 to 35°F |
| La Habra Heights | 10a | 30 to 35°F |
| La Mesa | 10b | 35 to 40°F |
| La Mirada | 10a | 30 to 35°F |
| La Palma | 10a | 30 to 35°F |
| La Puente | 10a | 30 to 35°F |
| La Quinta | 10a | 30 to 35°F |
| La Verne | 10a | 30 to 35°F |
| Lafayette | 9b | 25 to 30°F |
| Laguna Beach | 10b | 35 to 40°F |
| Laguna Hills | 10b | 35 to 40°F |
| Laguna Niguel | 10b | 35 to 40°F |
| Laguna Woods | 10b | 35 to 40°F |
| Lake Elsinore | 9b | 25 to 30°F |
| Lake Forest | 10b | 35 to 40°F |
| Lakeport | 8b | 15 to 20°F |
| Lakewood | 10a | 30 to 35°F |
| Lancaster | 8a | 10 to 15°F |
| Larkspur | 10a | 30 to 35°F |
| Lathrop | 9b | 25 to 30°F |
| Lawndale | 10b | 35 to 40°F |
| Lemon Grove | 10b | 35 to 40°F |
| Lemoore | 9a | 20 to 25°F |
| Lincoln | 9a | 20 to 25°F |
| Lindsay | 9b | 25 to 30°F |
| Live Oak | 9b | 25 to 30°F |
| Livermore | 9b | 25 to 30°F |
| Livingston | 9a | 20 to 25°F |
| Lodi | 9b | 25 to 30°F |
| Loma Linda | 10a | 30 to 35°F |
| Lomita | 10b | 35 to 40°F |
| Lompoc | 10a | 30 to 35°F |
| Long Beach | 10b | 35 to 40°F |
| Loomis | 9b | 25 to 30°F |
| Los Alamitos | 10a | 30 to 35°F |
| Los Altos | 9b | 25 to 30°F |
| Los Altos Hills | 9b | 25 to 30°F |
| Los Angeles | 10b | 35 to 40°F |
| Los Banos | 9a | 20 to 25°F |
| Los Gatos | 9b | 25 to 30°F |
| Loyalton | 6b | −5 to 0°F |
| Lynwood | 10b | 35 to 40°F |
| Madera | 9b | 25 to 30°F |
| Mammoth Lakes | 6a | −10 to −5°F |
| Manhattan Beach | 10b | 35 to 40°F |
| Manteca | 9b | 25 to 30°F |
| Maricopa | 9b | 25 to 30°F |
| Marina | 10a | 30 to 35°F |
| Martinez | 9b | 25 to 30°F |
| Marysville | 9b | 25 to 30°F |
| Maywood | 10b | 35 to 40°F |
| McFarland | 9b | 25 to 30°F |
| Mendota | 9a | 20 to 25°F |
| Menifee | 9b | 25 to 30°F |
| Menlo Park | 9b | 25 to 30°F |
| Merced | 9a | 20 to 25°F |
| Mill Valley | 10a | 30 to 35°F |
| Millbrae | 10a | 30 to 35°F |
| Milpitas | 10a | 30 to 35°F |
| Mission Viejo | 10b | 35 to 40°F |
| Modesto | 9b | 25 to 30°F |
| Monrovia | 10a | 30 to 35°F |
| Montague | 8a | 10 to 15°F |
| Montclair | 10a | 30 to 35°F |
| Monte Sereno | 9b | 25 to 30°F |
| Montebello | 10b | 35 to 40°F |
| Monterey Park | 10b | 35 to 40°F |
| Moorpark | 10a | 30 to 35°F |
| Moraga | 9b | 25 to 30°F |
| Moreno Valley | 9b | 25 to 30°F |
| Morgan Hill | 9b | 25 to 30°F |
| Morro Bay | 9b | 25 to 30°F |
| Mount Shasta | 8a | 10 to 15°F |
| Mountain View | 9b | 25 to 30°F |
| Murrieta | 9b | 25 to 30°F |
| Napa | 9b | 25 to 30°F |
| National City | 10b | 35 to 40°F |
| Needles | 10a | 30 to 35°F |
| Nevada City | 9a | 20 to 25°F |
| Newark | 10a | 30 to 35°F |
| Newman | 9b | 25 to 30°F |
| Newport Beach | 10b | 35 to 40°F |
| Norco | 10a | 30 to 35°F |
| Norwalk | 10b | 35 to 40°F |
| Novato | 9b | 25 to 30°F |
| Oakdale | 9b | 25 to 30°F |
| Oakland | 10a | 30 to 35°F |
| Oakley | 9b | 25 to 30°F |
| Oceanside | 10a | 30 to 35°F |
| Ojai | 9b | 25 to 30°F |
| Ontario | 10a | 30 to 35°F |
| Orange | 10b | 35 to 40°F |
| Orange Cove | 9b | 25 to 30°F |
| Orinda | 9b | 25 to 30°F |
| Orland | 9b | 25 to 30°F |
| Oroville | 9b | 25 to 30°F |
| Oxnard | 10b | 35 to 40°F |
| Pacific Grove | 10a | 30 to 35°F |
| Pacifica | 10a | 30 to 35°F |
| Palm Desert | 10a | 30 to 35°F |
| Palm Springs | 10a | 30 to 35°F |
| Palmdale | 8b | 15 to 20°F |
| Palo Alto | 9b | 25 to 30°F |
| Palos Verdes Estates | 10b | 35 to 40°F |
| Paradise | 9b | 25 to 30°F |
| Paramount | 10b | 35 to 40°F |
| Parlier | 9b | 25 to 30°F |
| Pasadena | 10a | 30 to 35°F |
| Patterson | 9b | 25 to 30°F |
| Perris | 9b | 25 to 30°F |
| Petaluma | 9b | 25 to 30°F |
| Pico Rivera | 10b | 35 to 40°F |
| Piedmont | 10a | 30 to 35°F |
| Pinole | 10a | 30 to 35°F |
| Pismo Beach | 10a | 30 to 35°F |
| Pittsburg | 9b | 25 to 30°F |
| Placentia | 10b | 35 to 40°F |
| Placerville | 9b | 25 to 30°F |
| Pleasant Hill | 9b | 25 to 30°F |
| Pleasanton | 9b | 25 to 30°F |
| Plymouth | 9b | 25 to 30°F |
| Point Arena | 9b | 25 to 30°F |
| Pomona | 10a | 30 to 35°F |
| Port Hueneme | 10b | 35 to 40°F |
| Porterville | 9b | 25 to 30°F |
| Portola | 6b | −5 to 0°F |
| Portola Valley | 9b | 25 to 30°F |
| Poway | 10a | 30 to 35°F |
| Rancho Cordova | 9b | 25 to 30°F |
| Rancho Cucamonga | 10a | 30 to 35°F |
| Rancho Mirage | 10a | 30 to 35°F |
| Rancho Palos Verdes | 10b | 35 to 40°F |
| Rancho Santa Margarita | 10b | 35 to 40°F |
| Red Bluff | 9b | 25 to 30°F |
| Redding | 9a | 20 to 25°F |
| Redlands | 10a | 30 to 35°F |
| Redondo Beach | 11a | 40 to 45°F |
| Redwood City | 10a | 30 to 35°F |
| Reedley | 9b | 25 to 30°F |
| Rialto | 10a | 30 to 35°F |
| Richmond | 10a | 30 to 35°F |
| Ridgecrest | 8b | 15 to 20°F |
| Rio Dell | 9b | 25 to 30°F |
| Rio Vista | 9b | 25 to 30°F |
| Ripon | 9b | 25 to 30°F |
| Riverbank | 9b | 25 to 30°F |
| Riverside | 10a | 30 to 35°F |
| Rocklin | 9b | 25 to 30°F |
| Rohnert Park | 9a | 20 to 25°F |
| Rolling Hills | 10b | 35 to 40°F |
| Rolling Hills Estates | 10b | 35 to 40°F |
| Rosemead | 10b | 35 to 40°F |
| Roseville | 9b | 25 to 30°F |
| Ross | 9b | 25 to 30°F |
| Sacramento | 9b | 25 to 30°F |
| Salinas | 9b | 25 to 30°F |
| San Anselmo | 9b | 25 to 30°F |
| San Bernardino | 10a | 30 to 35°F |
| San Bruno | 10a | 30 to 35°F |
| San Buenaventura (Ventura) | 10a | 30 to 35°F |
| San Carlos | 10a | 30 to 35°F |
| San Clemente | 10b | 35 to 40°F |
| San Diego | 10b | 35 to 40°F |
| San Dimas | 10a | 30 to 35°F |
| San Fernando | 10a | 30 to 35°F |
| San Francisco | 10a | 30 to 35°F |
| San Gabriel | 10a | 30 to 35°F |
| San Jacinto | 9b | 25 to 30°F |
| San Joaquin | 9a | 20 to 25°F |
| San Jose | 9b | 25 to 30°F |
| San Juan Bautista | 9b | 25 to 30°F |
| San Juan Capistrano | 10b | 35 to 40°F |
| San Leandro | 10a | 30 to 35°F |
| San Luis Obispo | 9b | 25 to 30°F |
| San Marcos | 10a | 30 to 35°F |
| San Marino | 10a | 30 to 35°F |
| San Mateo | 10a | 30 to 35°F |
| San Pablo | 10a | 30 to 35°F |
| San Rafael | 10a | 30 to 35°F |
| San Ramon | 9b | 25 to 30°F |
| Sanger | 9b | 25 to 30°F |
| Santa Ana | 10b | 35 to 40°F |
| Santa Barbara | 10b | 35 to 40°F |
| Santa Clara | 9b | 25 to 30°F |
| Santa Clarita | 10a | 30 to 35°F |
| Santa Cruz | 9b | 25 to 30°F |
| Santa Fe Springs | 10b | 35 to 40°F |
| Santa Maria | 9b | 25 to 30°F |
| Santa Monica | 11a | 40 to 45°F |
| Santa Paula | 10a | 30 to 35°F |
| Santa Rosa | 9a | 20 to 25°F |
| Santee | 10a | 30 to 35°F |
| Saratoga | 9b | 25 to 30°F |
| Sausalito | 10a | 30 to 35°F |
| Scotts Valley | 9b | 25 to 30°F |
| Seal Beach | 10a | 30 to 35°F |
| Seaside | 10a | 30 to 35°F |
| Sebastopol | 9a | 20 to 25°F |
| Selma | 9b | 25 to 30°F |
| Shafter | 9a | 20 to 25°F |
| Shasta Lake | 9b | 25 to 30°F |
| Sierra Madre | 10a | 30 to 35°F |
| Signal Hill | 10b | 35 to 40°F |
| Simi Valley | 10a | 30 to 35°F |
| Solana Beach | 10b | 35 to 40°F |
| Soledad | 9b | 25 to 30°F |
| Solvang | 9a | 20 to 25°F |
| Sonoma | 9b | 25 to 30°F |
| Sonora | 9a | 20 to 25°F |
| South El Monte | 10b | 35 to 40°F |
| South Gate | 10b | 35 to 40°F |
| South Lake Tahoe | 6b | −5 to 0°F |
| South Pasadena | 10a | 30 to 35°F |
| South San Francisco | 10a | 30 to 35°F |
| St. Helena | 9b | 25 to 30°F |
| Stanton | 10a | 30 to 35°F |
| Suisun City | 9b | 25 to 30°F |
| Sunnyvale | 10a | 30 to 35°F |
| Susanville | 7a | 0 to 5°F |
| Sutter Creek | 9b | 25 to 30°F |
| Taft | 9b | 25 to 30°F |
| Tehachapi | 8b | 15 to 20°F |
| Tehama | 9a | 20 to 25°F |
| Temecula | 9b | 25 to 30°F |
| Temple City | 10a | 30 to 35°F |
| Thousand Oaks | 10a | 30 to 35°F |
| Tiburon | 10a | 30 to 35°F |
| Torrance | 10b | 35 to 40°F |
| Tracy | 9b | 25 to 30°F |
| Trinidad | 9b | 25 to 30°F |
| Truckee | 6b | −5 to 0°F |
| Tulare | 9b | 25 to 30°F |
| Tulelake | 6b | −5 to 0°F |
| Turlock | 9b | 25 to 30°F |
| Tustin | 10a | 30 to 35°F |
| Twentynine Palms | 9b | 25 to 30°F |
| Ukiah | 9a | 20 to 25°F |
| Union City | 10a | 30 to 35°F |
| Upland | 10a | 30 to 35°F |
| Vacaville | 9b | 25 to 30°F |
| Vallejo | 9b | 25 to 30°F |
| Vernon | 10b | 35 to 40°F |
| Victorville | 8b | 15 to 20°F |
| Villa Park | 10a | 30 to 35°F |
| Visalia | 9b | 25 to 30°F |
| Vista | 10a | 30 to 35°F |
| Walnut | 10a | 30 to 35°F |
| Walnut Creek | 9b | 25 to 30°F |
| Wasco | 9a | 20 to 25°F |
| Waterford | 9b | 25 to 30°F |
| Watsonville | 9b | 25 to 30°F |
| Weed | 8a | 10 to 15°F |
| West Covina | 10a | 30 to 35°F |
| West Hollywood | 10b | 35 to 40°F |
| West Sacramento | 9b | 25 to 30°F |
| Westlake Village | 10b | 35 to 40°F |
| Westminster | 10a | 30 to 35°F |
| Westmorland | 9b | 25 to 30°F |
| Wheatland | 9b | 25 to 30°F |
| Whittier | 10b | 35 to 40°F |
| Wildomar | 9b | 25 to 30°F |
| Williams | 9b | 25 to 30°F |
| Willits | 9a | 20 to 25°F |
| Willows | 9b | 25 to 30°F |
| Windsor | 9a | 20 to 25°F |
| Winters | 9b | 25 to 30°F |
| Woodlake | 9b | 25 to 30°F |
| Woodland | 9b | 25 to 30°F |
| Woodside | 10a | 30 to 35°F |
| Yorba Linda | 10a | 30 to 35°F |
| Yountville | 9b | 25 to 30°F |
| Yreka | 8a | 10 to 15°F |
| Yuba City | 9b | 25 to 30°F |
| Yucaipa | 9b | 25 to 30°F |
| Yucca Valley | 9a | 20 to 25°F |
Source: USDA Plant Hardiness Zone Map, 2023, Agricultural Research Service, U.S. Department of Agriculture; ZIP code table from the PRISM Group, Oregon State University (accessed Oct 2026). This list is our own summary, not the official USDA map. See how we calculate.
Frequently asked questions
What planting zone is California?
California spans zones 5b to 11a on the 2023 USDA map, and zone 9b is the most common. Look up your ZIP code for your exact zone.
What zone is San Diego, CA?
San Diego is zone 10b, where the coldest night of an average winter falls from 35 to 40°F. Plants rated hardy to zone 10 or colder should survive a typical winter there.
More for California: California climate zones (insulation) · Last frost dates in California · Frost line depth by state