City	Sow outdoors	Last frost
San Jose	Jan 2 to Jan 16	Jan 2
Fresno	Jan 14 to Jan 28	Jan 14
Sacramento	Jan 12 to Jan 26	Jan 12
Bakersfield	Jan 31 to Feb 14	Jan 31
Stockton	Feb 5 to Feb 19	Feb 5
Riverside	Jan 9 to Jan 23	Jan 9
Irvine	Jan 5 to Jan 19	Jan 5
Fremont	Jan 1 to Jan 15	Jan 1
San Bernardino	Jan 27 to Feb 10	Jan 27
Fontana	Jan 4 to Jan 18	Jan 4
Modesto	Jan 31 to Feb 14	Jan 31
Moreno Valley	Jan 27 to Feb 10	Jan 27
Glendale	Jan 2 to Jan 16	Jan 2
Ontario	Jan 4 to Jan 18	Jan 4
Elk Grove	Feb 2 to Feb 16	Feb 2
Santa Rosa	Feb 25 to Mar 11	Feb 25
Rancho Cucamonga	Jan 4 to Jan 18	Jan 4
Oceanside	Jan 23 to Feb 6	Jan 23
Lancaster	Apr 3 to Apr 17	Apr 3
Roseville	Feb 22 to Mar 8	Feb 22
Palmdale	Mar 10 to Mar 24	Mar 10
Corona	Jan 17 to Jan 31	Jan 17
Salinas	Jan 29 to Feb 12	Jan 29
Hayward	Jan 2 to Jan 16	Jan 2
Sunnyvale	Jan 6 to Jan 20	Jan 6
Pomona	Jan 8 to Jan 22	Jan 8
Visalia	Jan 23 to Feb 6	Jan 23
Escondido	Jan 2 to Jan 16	Jan 2
Victorville	Mar 18 to Apr 1	Mar 18
Pasadena	Jan 8 to Jan 22	Jan 8
Santa Clara	Jan 12 to Jan 26	Jan 12
Clovis	Jan 14 to Jan 28	Jan 14
Simi Valley	Jan 24 to Feb 7	Jan 24
Vallejo	Jan 17 to Jan 31	Jan 17
Concord	Jan 9 to Jan 23	Jan 9
Fairfield	Jan 15 to Jan 29	Jan 15
Thousand Oaks	Dec 31 to Jan 14	Dec 31
Berkeley	Jan 3 to Jan 17	Jan 3
Antioch	Jan 12 to Jan 26	Jan 12
Menifee	Jan 28 to Feb 11	Jan 28
Temecula	Feb 2 to Feb 16	Feb 2
Richmond	Jan 4 to Jan 18	Jan 4
Murrieta	Feb 2 to Feb 16	Feb 2
Santa Maria	Feb 4 to Feb 18	Feb 4
Jurupa Valley	Jan 9 to Jan 23	Jan 9
Rialto	Jan 10 to Jan 24	Jan 10
West Covina	Jan 8 to Jan 22	Jan 8
Chico	Mar 4 to Mar 18	Mar 4
El Monte	Jan 4 to Jan 18	Jan 4
Vacaville	Feb 18 to Mar 4	Feb 18
San Mateo	Dec 29 to Jan 12	Dec 29
Burbank	Jan 2 to Jan 16	Jan 2
Hesperia	Feb 28 to Mar 14	Feb 28
Tracy	Feb 25 to Mar 11	Feb 25
El Cajon	Jan 6 to Jan 20	Jan 6
Daly City	Dec 30 to Jan 13	Dec 30
Merced	Mar 3 to Mar 17	Mar 3
Vista	Jan 30 to Feb 13	Jan 30
Chino	Jan 17 to Jan 31	Jan 17
Manteca	Feb 6 to Feb 20	Feb 6
Arden-Arcade	Jan 12 to Jan 26	Jan 12
San Marcos	Jan 2 to Jan 16	Jan 2
Indio	Dec 31 to Jan 14	Dec 31
Redding	Mar 3 to Mar 17	Mar 3
Hemet	Jan 31 to Feb 14	Jan 31
Folsom	Jan 12 to Jan 26	Jan 12
Carson	Jan 9 to Jan 23	Jan 9
Mission Viejo	Jan 6 to Jan 20	Jan 6
Rancho Cordova	Jan 12 to Jan 26	Jan 12
Santa Barbara	Jan 13 to Jan 27	Jan 13
Citrus Heights	Jan 12 to Jan 26	Jan 12
San Ramon	Mar 8 to Mar 22	Mar 8
Mountain View	Jan 6 to Jan 20	Jan 6
San Leandro	Jan 7 to Jan 21	Jan 7
Livermore	Feb 15 to Mar 1	Feb 15
Perris	Jan 28 to Feb 11	Jan 28
Redwood City	Jan 17 to Jan 31	Jan 17
Alhambra	Jan 4 to Jan 18	Jan 4
Upland	Jan 4 to Jan 18	Jan 4
Milpitas	Jan 12 to Jan 26	Jan 12
Carmichael	Jan 12 to Jan 26	Jan 12
Pittsburg	Jan 12 to Jan 26	Jan 12
Chino Hills	Jan 17 to Jan 31	Jan 17
Alameda	Jan 7 to Jan 21	Jan 7
Rocklin	Feb 25 to Mar 11	Feb 25
Napa	Feb 12 to Feb 26	Feb 12
Apple Valley	Mar 18 to Apr 1	Mar 18
Lake Elsinore	Jan 28 to Feb 11	Jan 28
Pleasanton	Feb 15 to Mar 1	Feb 15
Redlands	Jan 27 to Feb 10	Jan 27
Tulare	Jan 23 to Feb 6	Jan 23
Turlock	Jan 6 to Jan 20	Jan 6
Dublin	Feb 15 to Mar 1	Feb 15
Eastvale	Jan 17 to Jan 31	Jan 17
Walnut Creek	Jan 7 to Jan 21	Jan 7
Yuba City	Jan 15 to Jan 29	Jan 15
Lodi	Feb 9 to Feb 23	Feb 9
Madera	Feb 12 to Feb 26	Feb 12
Baldwin Park	Jan 4 to Jan 18	Jan 4
Camarillo	Dec 31 to Jan 14	Dec 31
Palo Alto	Feb 1 to Feb 15	Feb 1
Brentwood	Jan 12 to Jan 26	Jan 12
Davis	Feb 10 to Feb 24	Feb 10
Castro Valley	Jan 2 to Jan 16	Jan 2
Union City	Jan 7 to Jan 21	Jan 7
South San Francisco	Dec 29 to Jan 12	Dec 29
Laguna Niguel	Jan 6 to Jan 20	Jan 6
Porterville	Jan 20 to Feb 3	Jan 20
Woodland	Feb 7 to Feb 21	Feb 7
Hanford	Feb 7 to Feb 21	Feb 7
San Clemente	Jan 6 to Jan 20	Jan 6
Santa Cruz	Jan 29 to Feb 12	Jan 29
Beaumont	Jan 31 to Feb 14	Jan 31
Gilroy	Feb 24 to Mar 10	Feb 24
Montebello	Jan 4 to Jan 18	Jan 4
La Mesa	Jan 6 to Jan 20	Jan 6
Petaluma	Feb 28 to Mar 14	Feb 28
San Rafael	Jan 11 to Jan 25	Jan 11
Pico Rivera	Jan 4 to Jan 18	Jan 4
Cupertino	Jan 6 to Jan 20	Jan 6
Santee	Jan 6 to Jan 20	Jan 6
Highland	Jan 27 to Feb 10	Jan 27
Monterey Park	Jan 4 to Jan 18	Jan 4
Lincoln	Feb 25 to Mar 11	Feb 25
West Sacramento	Feb 2 to Feb 16	Feb 2
San Jacinto	Jan 31 to Feb 14	Jan 31
Yucaipa	Jan 27 to Feb 10	Jan 27
Arcadia	Jan 4 to Jan 18	Jan 4
Colton	Jan 10 to Jan 24	Jan 10
Palm Desert	Dec 31 to Jan 14	Dec 31
Cathedral City	Jan 9 to Jan 23	Jan 9
Delano	Jan 31 to Feb 14	Jan 31
Novato	Jan 11 to Jan 25	Jan 11
Diamond Bar	Jan 8 to Jan 22	Jan 8
Watsonville	Jan 28 to Feb 11	Jan 28
San Luis Obispo	Jan 31 to Feb 14	Jan 31
El Dorado Hills	Mar 31 to Apr 14	Mar 31
Aliso Viejo	Jan 6 to Jan 20	Jan 6
Glendora	Jan 8 to Jan 22	Jan 8
Los Banos	Jan 26 to Feb 9	Jan 26
Florin	Jan 12 to Jan 26	Jan 12
Rosemead	Jan 4 to Jan 18	Jan 4
Covina	Jan 8 to Jan 22	Jan 8
Poway	Jan 5 to Jan 19	Jan 5
Antelope	Jan 12 to Jan 26	Jan 12
Ceres	Jan 31 to Feb 14	Jan 31
North Highlands	Jan 12 to Jan 26	Jan 12
Newark	Jan 1 to Jan 15	Jan 1
Oakley	Jan 12 to Jan 26	Jan 12
Azusa	Jan 8 to Jan 22	Jan 8
Hollister	Feb 19 to Mar 5	Feb 19
Morgan Hill	Feb 24 to Mar 10	Feb 24
Coachella	Dec 31 to Jan 14	Dec 31
Palm Springs	Jan 1 to Jan 15	Jan 1
Rohnert Park	Feb 25 to Mar 11	Feb 25
El Centro	Jan 3 to Jan 17	Jan 3
Lompoc	Jan 20 to Feb 3	Jan 20
Danville	Mar 8 to Mar 22	Mar 8
Lathrop	Feb 6 to Feb 20	Feb 6
Vineyard	Jan 12 to Jan 26	Jan 12
French Valley	Feb 2 to Feb 16	Feb 2
Campbell	Feb 2 to Feb 16	Feb 2
San Bruno	Jan 11 to Jan 25	Jan 11
Altadena	Jan 8 to Jan 22	Jan 8
Rancho Palos Verdes	Jan 9 to Jan 23	Jan 9
La Quinta	Dec 31 to Jan 14	Dec 31
Adelanto	Mar 18 to Apr 1	Mar 18
Calexico	Jan 3 to Jan 17	Jan 3
Monrovia	Apr 28 to May 12	Apr 28
San Gabriel	Jan 4 to Jan 18	Jan 4
Wildomar	Jan 28 to Feb 11	Jan 28
Montclair	Jan 8 to Jan 22	Jan 8
Foothill Farms	Jan 12 to Jan 26	Jan 12
Pacifica	Jan 11 to Jan 25	Jan 11
Martinez	Feb 28 to Mar 14	Feb 28
La Puente	Jan 4 to Jan 18	Jan 4
Claremont	Jan 8 to Jan 22	Jan 8
Orangevale	Jan 12 to Jan 26	Jan 12
Temple City	Jan 4 to Jan 18	Jan 4
San Juan Capistrano	Jan 6 to Jan 20	Jan 6
Moorpark	Dec 31 to Jan 14	Dec 31
Oildale	Jan 31 to Feb 14	Jan 31
Pleasant Hill	Jan 7 to Jan 21	Jan 7
Desert Hot Springs	Feb 25 to Mar 11	Feb 25
San Dimas	Jan 8 to Jan 22	Jan 8
Menlo Park	Feb 1 to Feb 15	Feb 1
Los Gatos	Feb 2 to Feb 16	Feb 2
Fallbrook	Feb 2 to Feb 16	Feb 2
Foster City	Jan 17 to Jan 31	Jan 17
Goleta	Jan 11 to Jan 25	Jan 11
Dana Point	Jan 6 to Jan 20	Jan 6
Spring Valley	Jan 6 to Jan 20	Jan 6
Atwater	Mar 3 to Mar 17	Mar 3
Fair Oaks	Jan 12 to Jan 26	Jan 12
Burlingame	Dec 29 to Jan 12	Dec 29
Banning	Jan 31 to Feb 14	Jan 31
Santa Paula	Dec 31 to Jan 14	Dec 31
San Pablo	Jan 4 to Jan 18	Jan 4
Seaside	Jan 2 to Jan 16	Jan 2
El Paso de Robles	Mar 15 to Mar 29	Mar 15
Orcutt	Feb 4 to Feb 18	Feb 4
Los Altos	Jan 6 to Jan 20	Jan 6
Saratoga	Feb 2 to Feb 16	Feb 2
La Verne	Jan 8 to Jan 22	Jan 8
Laguna Hills	Jan 6 to Jan 20	Jan 6
Atascadero	Mar 15 to Mar 29	Mar 15
Suisun City	Jan 15 to Jan 29	Jan 15
San Lorenzo	Jan 2 to Jan 16	Jan 2
Eastern Goleta Valley	Jan 11 to Jan 25	Jan 11
San Carlos	Jan 17 to Jan 31	Jan 17
Monterey	Jan 1 to Jan 15	Jan 1
East Palo Alto	Feb 1 to Feb 15	Feb 1
Belmont	Jan 17 to Jan 31	Jan 17
East Niles	Jan 31 to Feb 14	Jan 31
Temescal Valley	Jan 28 to Feb 11	Jan 28
Ridgecrest	Mar 11 to Mar 25	Mar 11
Brawley	Jan 16 to Jan 30	Jan 16
Walnut	Jan 8 to Jan 22	Jan 8
Lemoore	Feb 24 to Mar 10	Feb 24
Sanger	Jan 30 to Feb 13	Jan 30
Reedley	Jan 30 to Feb 13	Jan 30
Galt	Feb 9 to Feb 23	Feb 9
Patterson	Jan 31 to Feb 14	Jan 31
Riverbank	Jan 31 to Feb 14	Jan 31
Wasco	Jan 31 to Feb 14	Jan 31
Benicia	Jan 17 to Jan 31	Jan 17
Soledad	Apr 23 to May 7	Apr 23
Hercules	Jan 17 to Jan 31	Jan 17
El Cerrito	Jan 3 to Jan 17	Jan 3
Dinuba	Jan 23 to Feb 6	Jan 23
Twentynine Palms	Jan 24 to Feb 7	Jan 24
Windsor	Mar 2 to Mar 16	Mar 2
South Pasadena	Jan 8 to Jan 22	Jan 8
West Whittier-Los Nietos	Jan 4 to Jan 18	Jan 4
Mountain House	Jan 19 to Feb 2	Jan 19
Lafayette	Jan 7 to Jan 21	Jan 7
Eureka	Feb 22 to Mar 8	Feb 22
Loma Linda	Jan 27 to Feb 10	Jan 27
Norco	Jan 17 to Jan 31	Jan 17
Barstow	Feb 22 to Mar 8	Feb 22
Selma	Jan 30 to Feb 13	Jan 30
Bloomington	Jan 10 to Jan 24	Jan 10
Bay Point	Jan 9 to Jan 23	Jan 9
Shafter	Feb 20 to Mar 6	Feb 20
Ladera Ranch	Jan 6 to Jan 20	Jan 6
East San Gabriel	Jan 4 to Jan 18	Jan 4
San Fernando	Jan 2 to Jan 16	Jan 2
Rosemont	Jan 12 to Jan 26	Jan 12
Marina	Feb 4 to Feb 18	Feb 4
Oakdale	Jan 31 to Feb 14	Jan 31
Linda	Feb 11 to Feb 25	Feb 11
Millbrae	Dec 29 to Jan 12	Dec 29
Duarte	Apr 28 to May 12	Apr 28
Ramona	Mar 19 to Apr 2	Mar 19
Ashland	Jan 2 to Jan 16	Jan 2
American Canyon	Mar 5 to Mar 19	Mar 5
Laguna Beach	Jan 6 to Jan 20	Jan 6
Corcoran	Feb 15 to Mar 1	Feb 15
Imperial	Jan 14 to Jan 28	Jan 14
Rancho San Diego	Jan 6 to Jan 20	Jan 6
West Puente Valley	Jan 4 to Jan 18	Jan 4
Calabasas	Jan 24 to Feb 7	Jan 24
Winter Gardens	Jan 6 to Jan 20	Jan 6
West Carson	Jan 9 to Jan 23	Jan 9
Yucca Valley	Mar 14 to Mar 28	Mar 14
Lakeside	Jan 6 to Jan 20	Jan 6
Valinda	Jan 8 to Jan 22	Jan 8
Granite Bay	Feb 25 to Mar 11	Feb 25
Stevenson Ranch	Jan 8 to Jan 22	Jan 8
Greenfield	Feb 23 to Mar 9	Feb 23
Dixon	Feb 10 to Feb 24	Feb 10
Rosamond	Apr 3 to Apr 17	Apr 3
Oroville	Jan 30 to Feb 13	Jan 30
East Hemet	Jan 10 to Jan 24	Jan 10

Questions

When should I plant dill in California?

In San Jose, sow outdoors from January 2 to January 16. Across California the window opens between January 1 and December 31, depending on the local last frost.

How is this date worked out?

Sow outdoors up to 2 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.