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2023 Planting Calendar: When to Start Vegetable Seeds | The Old Farmer's Almanac

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Planting Calendar for Santa Clara, CA

For the Almanac's fall and spring planting calendars, we've calculated the best time to start seeds indoors, when to transplant young plants outside, and when to direct seed into the ground.

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Planting Dates for Spring

On average, your last spring frost occurs on March 1 (at SAN JOSE, CA climate station, elevation 52 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost Feb 15-Mar 1
Moon Feb 20-Mar 1
BasilFrost Jan 4-18
Moon Jan 4- 6
Frost Mar 1-22
Moon Mar 1- 7, Mar 21-22
N/A
BeetsN/AN/AFrost Feb 15-Mar 8
Moon Feb 15-19, Mar 8
Bell PeppersFrost Dec 21-Jan 4
Moon Dec 23-Jan 4
Frost Mar 8-22
Moon Mar 21-22
N/A
BroccoliFrost Jan 4-18
Moon Jan 4- 6
Frost Feb 1-22
Moon Feb 1- 5, Feb 20-22
N/A
CabbageFrost Jan 4-18
Moon Jan 4- 6
Frost Feb 1-15
Moon Feb 1- 5
N/A
CantaloupesFrost Feb 1- 8
Moon Feb 1- 5
Frost Mar 15-29
Moon Mar 21-29
N/A
CarrotsN/AN/AFrost Jan 25-Feb 8
Moon Feb 6- 8
CauliflowerFrost Jan 4-18
Moon Jan 4- 6
Frost Feb 1-22
Moon Feb 1- 5, Feb 20-22
N/A
CeleryFrost Dec 21-Jan 4
Moon Dec 23-Jan 4
Frost Mar 8-22
Moon Mar 21-22
N/A
ChivesN/AN/AFrost Feb 1- 8
Moon Feb 1- 5
Cilantro (Coriander)N/AN/AFrost Mar 1-15
Moon Mar 1- 7
CornN/AN/AFrost Mar 15-Apr 5
Moon Mar 21-Apr 5
CucumbersFrost Feb 1- 8
Moon Feb 1- 5
Frost Mar 15-29
Moon Mar 21-29
N/A
DillN/AN/AFrost Mar 1-Apr 5
Moon Mar 1- 7, Mar 21-Apr 5
EggplantsFrost Jan 4-18
Moon Jan 4- 6
Frost Mar 15-29
Moon Mar 21-29
N/A
Fava Beans (Broad Beans)Frost Dec 7-21
Moon Dec 7
Frost Jan 11-Feb 1
Moon Jan 21-Feb 1
N/A
Green BeansN/AN/AFrost Mar 8-29
Moon Mar 21-29
Jalapeño PeppersFrost Dec 21-Jan 4
Moon Dec 23-Jan 4
Frost Mar 8-22
Moon Mar 21-22
N/A
KaleFrost Jan 4-18
Moon Jan 4- 6
Frost Feb 1-22
Moon Feb 1- 5, Feb 20-22
N/A
KohlrabiFrost Jan 18-Feb 1
Moon Jan 21-Feb 1
Frost Feb 8-15
N/A
LettuceFrost Jan 18-Feb 1
Moon Jan 21-Feb 1
Frost Feb 15-Mar 15
Moon Feb 20-Mar 7
N/A
OkraN/AN/AFrost Mar 15-29
Moon Mar 21-29
OnionsN/AN/AFrost Feb 1-22
Moon Feb 6-19
OreganoFrost Dec 21-Jan 18
Moon Dec 23-Jan 6
Frost Mar 1-22
Moon Mar 1- 7, Mar 21-22
N/A
ParsleyN/AN/AFrost Feb 1-15
Moon Feb 1- 5
ParsnipsN/AN/AFrost Feb 8-Mar 1
Moon Feb 8-19
PeasN/AN/AFrost Jan 18-Feb 8
Moon Jan 21-Feb 5
PotatoesN/AN/AFrost Feb 22-Mar 15
Moon Mar 8-15
PumpkinsFrost Feb 8-22
Moon Feb 20-22
Frost Mar 15-29
Moon Mar 21-29
N/A
RadishesN/AN/AFrost Jan 4-25
Moon Jan 7-20
RosemaryFrost Dec 21-Jan 4
Moon Dec 23-Jan 4
Frost Mar 8-29
Moon Mar 21-29
N/A
SageFrost Jan 4-18
Moon Jan 4- 6
Frost Mar 1-15
Moon Mar 1- 7
N/A
SpinachN/AN/AFrost Jan 18-Feb 8
Moon Jan 21-Feb 5
Sweet PotatoesN/AN/AFrost Mar 22-Apr 5
Swiss ChardFrost Jan 18-Feb 1
Moon Jan 21-Feb 1
Frost Feb 8-15
N/A
ThymeFrost Dec 21-Jan 18
Moon Dec 23-Jan 6
Frost Mar 1-22
Moon Mar 1- 7, Mar 21-22
N/A
TomatoesFrost Jan 4-18
Moon Jan 4- 6
Frost Mar 8-29
Moon Mar 21-29
N/A
TurnipsN/AN/AFrost Feb 1-22
Moon Feb 6-19
WatermelonsFrost Feb 1- 8
Moon Feb 1- 5
Frost Mar 15-29
Moon Mar 21-29
N/A
Winter SquashN/AN/AFrost Mar 15-Apr 12
Moon Mar 21-Apr 5
ZucchiniN/AN/AFrost Mar 15-Apr 12
Moon Mar 21-Apr 5

Planting Dates for Fall

On average, your first fall frost occurs on December 12 (at SAN JOSE, CA climate station).
CropFrost Based on Frost Dates
Start Seeds Indoors by...Plant Seedlings Outdoors by...Start Seeds Outdoors by...
ArugulaN/AN/AFrost Nov 7
BeetsN/AN/AFrost Oct 28
Bell PeppersFrost Jun 29Frost Aug 24N/A
BroccoliFrost Aug 31Frost Sep 28N/A
CabbageFrost Aug 21Frost Sep 18N/A
CantaloupesN/AN/AFrost Aug 14
CarrotsN/AN/AFrost Oct 23
CauliflowerFrost Aug 31Frost Sep 28N/A
CeleryFrost Jun 20Frost Aug 29N/A
CornN/AN/AFrost Sep 3
CucumbersN/AN/AFrost Sep 8
EggplantsFrost Jun 29Frost Aug 24N/A
Fava Beans (Broad Beans)N/AN/AFrost Oct 13
Green BeansN/AN/AFrost Sep 8
Jalapeño PeppersFrost Jul 19Frost Sep 13N/A
KaleFrost Sep 20Frost Oct 18N/A
KohlrabiN/AN/AFrost Oct 23
LettuceN/AN/AFrost Nov 2
OkraN/AN/AFrost Sep 3
ParsnipsN/AN/AFrost Sep 8
PeasN/AN/AFrost Oct 8
PotatoesN/AN/AFrost Sep 28
PumpkinsN/AN/AFrost Jul 25
RadishesN/AN/AFrost Nov 7
SpinachN/AN/AFrost Nov 17
Sweet PotatoesFrost Jul 10Frost Aug 14N/A
Swiss ChardN/AN/AFrost Nov 2
TomatoesFrost Jul 4Frost Aug 29N/A
TurnipsN/AN/AFrost Nov 2
WatermelonsN/AN/AFrost Aug 14
Winter SquashN/AN/AFrost Aug 29
ZucchiniN/AN/AFrost Sep 13