When to plant Collard greens in California
In spring, from Jan 1 – Feb 15 in Agoura Hills to May 20 – June 1 in Truckee.
In fall, from May 15 – June 15 in Truckee to Sept 1 – Dec 1 in Yucca Valley.
Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Adelanto | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Agoura Hills | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Alameda | — | Sept 1 – Dec 31Now |
| Albany | — | Sept 1 – Dec 31Now |
| Alhambra | — | Sept 1 – Dec 31Now |
| Aliso Viejo | — | Sept 1 – Dec 31Now |
| American Canyon | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Anaheim | — | Sept 1 – Dec 31Now |
| Anderson | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Antioch | — | Sept 1 – Dec 31Now |
| Apple Valley | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Arcadia | — | Sept 1 – Dec 31Now |
| Arcata | Jan 1 – Mar 15 | Sept 1 – Dec 31Now |
| Arroyo Grande | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Artesia | — | Sept 1 – Dec 31Now |
| Arvin | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Atascadero | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Atwater | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Auburn | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Avenal | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Azusa | — | Sept 1 – Dec 31Now |
| Bakersfield | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Baldwin Park | — | Sept 1 – Dec 31Now |
| Banning | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Barstow | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| Beaumont | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Bell | — | — |
| Bell Gardens | — | — |
| Bellflower | — | — |
| Belmont | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Benicia | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Berkeley | — | Sept 1 – Dec 31Now |
| Beverly Hills | — | — |
| Blythe | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Brawley | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Brea | — | Sept 1 – Dec 31Now |
| Brentwood | — | Sept 1 – Dec 31Now |
| Buena Park | — | — |
| Burbank | — | Sept 1 – Dec 31Now |
| Burlingame | — | Sept 1 – Dec 31Now |
| Calabasas | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Calexico | — | Sept 1 – Dec 31Now |
| California City | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Calimesa | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Camarillo | — | Sept 1 – Dec 31Now |
| Campbell | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Canyon Lake | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Carlsbad | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Carpinteria | — | — |
| Carson | — | — |
| Cathedral City | — | — |
| Ceres | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Cerritos | — | Sept 1 – Dec 31Now |
| Chico | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Chino | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Chino Hills | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Chowchilla | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Chula Vista | — | Sept 1 – Dec 31Now |
| Citrus Heights | — | Sept 1 – Dec 31Now |
| Claremont | — | Sept 1 – Dec 31Now |
| Clayton | Feb 1 – Apr 1 | Sept 1 – Dec 31Now |
| Clearlake | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Clovis | — | Sept 1 – Dec 31Now |
| Coachella | — | Sept 1 – Dec 31Now |
| Coalinga | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Colton | — | Sept 1 – Dec 31Now |
| Commerce | — | — |
| Compton | — | — |
| Concord | — | Sept 1 – Dec 31Now |
| Corcoran | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Corona | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Coronado | — | — |
| Corte Madera | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Costa Mesa | — | — |
| Covina | — | Sept 1 – Dec 31Now |
| Cudahy | — | — |
| Culver City | — | — |
| Cupertino | — | Sept 1 – Dec 31Now |
| Cypress | — | — |
| Daly City | — | Sept 1 – Dec 31Now |
| Dana Point | — | Sept 1 – Dec 31Now |
| Danville | Feb 1 – Apr 1 | Sept 1 – Dec 31Now |
| Davis | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Delano | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Desert Hot Springs | Jan 15 – Mar 15 | Sept 1 – Dec 31Now |
| Diamond Bar | — | Sept 1 – Dec 31Now |
| Dinuba | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Dixon | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Downey | — | — |
| Duarte | Apr 1 – June 1 | Aug 15 – Oct 1 |
| Dublin | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| East Palo Alto | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Eastvale | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| El Cajon | — | Sept 1 – Dec 31Now |
| El Centro | — | Sept 1 – Dec 31Now |
| El Cerrito | — | Sept 1 – Dec 31Now |
| El Monte | — | Sept 1 – Dec 31Now |
| El Paso de Robles (Paso Robles) | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| El Segundo | — | — |
| Elk Grove | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Emeryville | — | Sept 1 – Dec 31Now |
| Encinitas | — | Sept 1 – Dec 31Now |
| Escondido | — | Sept 1 – Dec 31Now |
| Eureka | Jan 1 – Mar 15 | Sept 1 – Dec 31Now |
| Exeter | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Fairfield | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Farmersville | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Fillmore | — | Sept 1 – Dec 31Now |
| Folsom | — | Sept 1 – Dec 31Now |
| Fontana | — | Sept 1 – Dec 31Now |
| Fortuna | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Foster City | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Fountain Valley | — | — |
| Fremont | — | Sept 1 – Dec 31Now |
| Fresno | — | Sept 1 – Dec 31Now |
| Fullerton | — | — |
| Galt | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Garden Grove | — | — |
| Gardena | — | — |
| Gilroy | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Glendale | — | Sept 1 – Dec 31Now |
| Glendora | — | Sept 1 – Dec 31Now |
| Goleta | — | Sept 1 – Dec 31Now |
| Grand Terrace | — | Sept 1 – Dec 31Now |
| Grass Valley | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Greenfield | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| Grover Beach | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Half Moon Bay | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Hanford | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Hawaiian Gardens | — | — |
| Hawthorne | — | — |
| Hayward | — | Sept 1 – Dec 31Now |
| Healdsburg | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Hemet | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Hercules | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Hermosa Beach | — | — |
| Hesperia | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Highland | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Hillsborough | — | Sept 1 – Dec 31Now |
| Hollister | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Huntington Beach | — | — |
| Huntington Park | — | — |
| Imperial | — | Sept 1 – Dec 31Now |
| Imperial Beach | — | Sept 1 – Dec 31Now |
| Indio | — | Sept 1 – Dec 31Now |
| Inglewood | — | — |
| Irvine | — | Sept 1 – Dec 31Now |
| Jurupa Valley | — | Sept 1 – Dec 31Now |
| Kerman | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| King City | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| Kingsburg | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| La Cañada Flintridge | — | — |
| La Habra | — | Sept 1 – Dec 31Now |
| La Mesa | — | Sept 1 – Dec 31Now |
| La Mirada | — | Sept 1 – Dec 31Now |
| La Palma | — | — |
| La Puente | — | Sept 1 – Dec 31Now |
| La Quinta | — | Sept 1 – Dec 31Now |
| La Verne | — | Sept 1 – Dec 31Now |
| Lafayette | — | Sept 1 – Dec 31Now |
| Laguna Beach | — | Sept 1 – Dec 31Now |
| Laguna Hills | — | Sept 1 – Dec 31Now |
| Laguna Niguel | — | Sept 1 – Dec 31Now |
| Laguna Woods | — | Sept 1 – Dec 31Now |
| Lake Elsinore | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Lake Forest | — | Sept 1 – Dec 31Now |
| Lakewood | — | — |
| Lancaster | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Larkspur | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Lathrop | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Lawndale | — | — |
| Lemon Grove | — | Sept 1 – Dec 31Now |
| Lemoore | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Lincoln | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Lindsay | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Livermore | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Livingston | — | Sept 1 – Dec 31Now |
| Lodi | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Loma Linda | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Lomita | — | — |
| Lompoc | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Long Beach | — | — |
| Los Alamitos | — | — |
| Los Altos | — | Sept 1 – Dec 31Now |
| Los Angeles | — | — |
| Los Banos | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Los Gatos | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Lynwood | — | — |
| Madera | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Malibu | — | — |
| Manhattan Beach | — | — |
| Manteca | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Marina | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Martinez | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Marysville | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Maywood | — | — |
| McFarland | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Mendota | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Menifee | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Menlo Park | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Merced | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Mill Valley | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Millbrae | — | Sept 1 – Dec 31Now |
| Milpitas | — | Sept 1 – Dec 31Now |
| Mission Viejo | — | Sept 1 – Dec 31Now |
| Modesto | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Monrovia | Apr 1 – June 1 | Aug 15 – Oct 1 |
| Montclair | — | Sept 1 – Dec 31Now |
| Montebello | — | Sept 1 – Dec 31Now |
| Monterey | — | Sept 1 – Dec 31Now |
| Monterey Park | — | Sept 1 – Dec 31Now |
| Moorpark | — | Sept 1 – Dec 31Now |
| Moraga | — | Sept 1 – Dec 31Now |
| Moreno Valley | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Morgan Hill | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Morro Bay | Jan 1 – Feb 15 | — |
| Mountain View | — | Sept 1 – Dec 31Now |
| Murrieta | Jan 1 – Feb 15 | — |
| Napa | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| National City | — | — |
| Newark | — | Sept 1 – Dec 31Now |
| Newman | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Newport Beach | — | — |
| Norco | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Norwalk | — | Sept 1 – Dec 31Now |
| Novato | — | Sept 1 – Dec 31Now |
| Oakdale | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Oakland | — | Sept 1 – Dec 31Now |
| Oakley | — | Sept 1 – Dec 31Now |
| Oceanside | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Ontario | — | Sept 1 – Dec 31Now |
| Orange | — | — |
| Orinda | — | Sept 1 – Dec 31Now |
| Oroville | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Oxnard | — | Sept 1 – Dec 31Now |
| Pacific Grove | — | Sept 1 – Dec 31Now |
| Pacifica | — | — |
| Palm Desert | — | Sept 1 – Dec 31Now |
| Palm Springs | — | Sept 1 – Dec 31Now |
| Palmdale | Feb 1 – Apr 1 | Aug 25 – Nov 1Now |
| Palo Alto | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Palos Verdes Estates | — | — |
| Paramount | — | — |
| Parlier | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Pasadena | — | — |
| Patterson | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Perris | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Petaluma | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Pico Rivera | — | Sept 1 – Dec 31Now |
| Piedmont | — | Sept 1 – Dec 31Now |
| Pinole | — | Sept 1 – Dec 31Now |
| Pittsburg | — | Sept 1 – Dec 31Now |
| Placentia | — | Sept 1 – Dec 31Now |
| Placerville | Mar 1 – June 1 | Aug 25 – Nov 1Now |
| Pleasant Hill | — | Sept 1 – Dec 31Now |
| Pleasanton | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Pomona | — | Sept 1 – Dec 31Now |
| Port Hueneme | — | Sept 1 – Dec 31Now |
| Porterville | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Poway | — | Sept 1 – Dec 31Now |
| Rancho Cordova | — | Sept 1 – Dec 31Now |
| Rancho Cucamonga | — | Sept 1 – Dec 31Now |
| Rancho Mirage | — | — |
| Rancho Palos Verdes | — | — |
| Rancho Santa Margarita | — | Sept 1 – Dec 31Now |
| Red Bluff | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Redding | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Redlands | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Redondo Beach | — | — |
| Redwood City | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Reedley | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Rialto | — | Sept 1 – Dec 31Now |
| Richmond | — | Sept 1 – Dec 31Now |
| Ridgecrest | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Rio Vista | — | Sept 1 – Dec 31Now |
| Ripon | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Riverbank | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Riverside | — | Sept 1 – Dec 31Now |
| Rocklin | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Rohnert Park | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Rosemead | — | Sept 1 – Dec 31Now |
| Roseville | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| Sacramento | — | Sept 1 – Dec 31Now |
| Salinas | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| San Anselmo | — | Sept 1 – Dec 31Now |
| San Bernardino | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| San Bruno | — | — |
| San Buenaventura (Ventura) | — | Sept 1 – Dec 31Now |
| San Carlos | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| San Clemente | — | Sept 1 – Dec 31Now |
| San Diego | — | — |
| San Dimas | — | Sept 1 – Dec 31Now |
| San Fernando | — | Sept 1 – Dec 31Now |
| San Francisco | — | Sept 1 – Dec 31Now |
| San Gabriel | — | Sept 1 – Dec 31Now |
| San Jacinto | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| San Jose | — | Sept 1 – Dec 31Now |
| San Juan Capistrano | — | Sept 1 – Dec 31Now |
| San Leandro | — | Sept 1 – Dec 31Now |
| San Luis Obispo | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| San Marcos | — | Sept 1 – Dec 31Now |
| San Marino | — | — |
| San Mateo | — | Sept 1 – Dec 31Now |
| San Pablo | — | Sept 1 – Dec 31Now |
| San Rafael | — | Sept 1 – Dec 31Now |
| San Ramon | Feb 1 – Apr 1 | Sept 1 – Dec 31Now |
| Sanger | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Santa Ana | — | — |
| Santa Barbara | — | — |
| Santa Clara | — | Sept 1 – Dec 31Now |
| Santa Clarita | — | Sept 1 – Dec 31Now |
| Santa Cruz | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Santa Fe Springs | — | Sept 1 – Dec 31Now |
| Santa Maria | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Santa Monica | — | — |
| Santa Paula | — | Sept 1 – Dec 31Now |
| Santa Rosa | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Santee | — | Sept 1 – Dec 31Now |
| Saratoga | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Scotts Valley | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Seal Beach | — | — |
| Seaside | — | Sept 1 – Dec 31Now |
| Selma | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Shafter | Jan 1 – Mar 15 | Aug 25 – Nov 1Now |
| Shasta Lake | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Sierra Madre | Apr 1 – June 1 | Aug 15 – Oct 1 |
| Signal Hill | — | — |
| Simi Valley | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Solana Beach | — | Sept 1 – Dec 31Now |
| Soledad | Mar 10 – June 1 | Aug 1 – Sept 15 |
| Sonoma | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| South El Monte | — | Sept 1 – Dec 31Now |
| South Gate | — | — |
| South Lake Tahoe | May 20 – June 1 | June 15 – July 15 |
| South Pasadena | — | — |
| South San Francisco | — | Sept 1 – Dec 31Now |
| Stanton | — | — |
| Stockton | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Suisun City | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Sunnyvale | — | Sept 1 – Dec 31Now |
| Susanville | May 1 – June 1 | July 1 – Aug 1 |
| Tehachapi | Apr 1 – June 1 | Aug 1 – Sept 15 |
| Temecula | Jan 1 – Feb 15 | — |
| Temple City | — | Sept 1 – Dec 31Now |
| Thousand Oaks | — | Sept 1 – Dec 31Now |
| Torrance | — | — |
| Tracy | Jan 15 – Mar 15 | Sept 1 – Dec 1Now |
| Truckee | May 20 – June 1 | May 15 – June 15 |
| Tulare | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Turlock | — | Sept 1 – Dec 31Now |
| Tustin | — | Sept 1 – Dec 31Now |
| Twentynine Palms | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Ukiah | Feb 15 – May 1 | Aug 25 – Nov 1Now |
| Union City | — | Sept 1 – Dec 31Now |
| Upland | — | Sept 1 – Dec 31Now |
| Vacaville | Jan 1 – Mar 15 | Sept 1 – Dec 1Now |
| Vallejo | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Victorville | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Visalia | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Vista | Jan 1 – Feb 15 | — |
| Walnut | — | Sept 1 – Dec 31Now |
| Walnut Creek | — | Sept 1 – Dec 31Now |
| Wasco | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Watsonville | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| West Covina | — | Sept 1 – Dec 31Now |
| West Hollywood | — | — |
| West Sacramento | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Westminster | — | — |
| Whittier | — | Sept 1 – Dec 31Now |
| Wildomar | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Windsor | Jan 15 – Mar 15 | Aug 25 – Nov 1Now |
| Woodland | Jan 1 – Feb 15 | Sept 1 – Dec 1Now |
| Yorba Linda | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Yuba City | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Yucaipa | Jan 1 – Feb 15 | Sept 1 – Dec 31Now |
| Yucca Valley | Feb 1 – Apr 1 | Sept 1 – Dec 1Now |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for collards.