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2022 Planting Calendar: When to Start Vegetable Seeds | The Old Farmer's Almanac

Planting Calendar for Westminster, CO

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 Fall

On average, your first fall frost occurs on October 4 (at NORTHGLENN, CO climate station).
CropFrost Based on Frost Dates
Start Seeds Indoors by...Plant Seedlings Outdoors by...Start Seeds Outdoors by...
ArugulaN/AN/AFrost Aug 30
BeetsN/AN/AFrost Aug 20
Bell PeppersFrost Apr 21Frost Jun 16N/A
BroccoliFrost Jun 23Frost Jul 21N/A
CabbageFrost Jun 13Frost Jul 11N/A
CantaloupesN/AN/AFrost Jun 6
CarrotsN/AN/AFrost Aug 15
CauliflowerFrost Jun 23Frost Jul 21N/A
CeleryFrost Apr 12Frost Jun 21N/A
CornN/AN/AFrost Jun 26
CucumbersN/AN/AFrost Jul 1
EggplantsFrost Apr 21Frost Jun 16N/A
Green BeansN/AN/AFrost Jul 1
Jalapeño PeppersFrost May 11Frost Jul 6N/A
KaleFrost Jul 13Frost Aug 10N/A
KohlrabiN/AN/AFrost Aug 15
LettuceN/AN/AFrost Aug 25
OkraN/AN/AFrost Jun 26
ParsnipsN/AN/AFrost Jul 1
PeasN/AN/AFrost Jul 31
PotatoesN/AN/AFrost Jul 21
PumpkinsN/AN/AFrost June 4
RadishesN/AN/AFrost Aug 30
SpinachN/AN/AFrost Sep 9
Sweet PotatoesFrost May 2Frost June 11N/A
Swiss ChardN/AN/AFrost Aug 25
TomatoesFrost Apr 26Frost Jun 21N/A
TurnipsN/AN/AFrost Aug 25
WatermelonsN/AN/AFrost Jun 6
Winter SquashN/AN/AFrost Jun 21
ZucchiniN/AN/AFrost Jul 6

Planting Dates for Spring

On average, your last spring frost occurs on May 7 (at NORTHGLENN, CO climate station, elevation 5406 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost Apr 23-May 7
Moon Apr 30-May 7
BasilFrost Mar 11-26
Moon Mar 11-18
Frost May 7-28
Moon May 7-15
N/A
BeetsN/AN/AFrost Apr 23-May 14
Moon Apr 23-29
Bell PeppersFrost Feb 25-Mar 11
Moon Mar 2-11
Frost May 14-28
Moon May 14-15
N/A
BroccoliFrost Mar 11-26
Moon Mar 11-18
Frost Apr 9-30
Moon Apr 9-16, Apr 30
N/A
CabbageFrost Mar 11-26
Moon Mar 11-18
Frost Apr 9-23
Moon Apr 9-16
N/A
CantaloupesFrost Apr 9-16
Moon Apr 9-16
Frost May 21-Jun 4
Moon May 30-Jun 4
N/A
CarrotsN/AN/AFrost Apr 2-16
CauliflowerFrost Mar 11-26
Moon Mar 11-18
Frost Apr 9-30
Moon Apr 9-16, Apr 30
N/A
CeleryFrost Feb 25-Mar 11
Moon Mar 2-11
Frost May 14-28
Moon May 14-15
N/A
ChivesN/AN/AFrost Apr 9-16
Moon Apr 9-16
Cilantro (Coriander)N/AN/AFrost May 7-21
Moon May 7-15
CornN/AN/AFrost May 21-Jun 11
Moon May 30-Jun 11
CucumbersFrost Apr 9-16
Moon Apr 9-16
Frost May 21-Jun 4
Moon May 30-Jun 4
N/A
DillN/AN/AFrost May 7-Jun 11
Moon May 7-15, May 30-Jun 11
EggplantsFrost Mar 11-26
Moon Mar 11-18
Frost May 21-Jun 4
Moon May 30-Jun 4
N/A
Green BeansN/AN/AFrost May 14-Jun 4
Moon May 14-15, May 30-Jun 4
Jalapeño PeppersFrost Feb 25-Mar 11
Moon Mar 2-11
Frost May 14-28
Moon May 14-15
N/A
KaleFrost Mar 11-26
Moon Mar 11-18
Frost Apr 9-30
Moon Apr 9-16, Apr 30
N/A
KohlrabiFrost Mar 26-Apr 9
Moon Apr 1- 9
Frost Apr 16-23
Moon Apr 16
N/A
LettuceFrost Mar 26-Apr 9
Moon Apr 1- 9
Frost Apr 23-May 21
Moon Apr 30-May 15
N/A
OkraN/AN/AFrost May 21-Jun 4
Moon May 30-Jun 4
OnionsN/AN/AFrost Apr 9-30
Moon Apr 17-29
OreganoFrost Feb 25-Mar 26
Moon Mar 2-18
Frost May 7-28
Moon May 7-15
N/A
ParsleyN/AN/AFrost Apr 9-23
Moon Apr 9-16
ParsnipsN/AN/AFrost Apr 16-May 7
Moon Apr 17-29
PeasN/AN/AFrost Mar 26-Apr 16
Moon Apr 1-16
PotatoesN/AN/AFrost Apr 30-May 21
Moon May 16-21
PumpkinsFrost Apr 16-30
Moon Apr 16
Frost May 21-Jun 4
Moon May 30-Jun 4
N/A
RadishesN/AN/AFrost Mar 11-Apr 2
Moon Mar 19-31
RosemaryFrost Feb 25-Mar 11
Moon Mar 2-11
Frost May 14-Jun 4
Moon May 14-15, May 30-Jun 4
N/A
SageFrost Mar 11-26
Moon Mar 11-18
Frost May 7-21
Moon May 7-15
N/A
SpinachN/AN/AFrost Mar 26-Apr 16
Moon Apr 1-16
Sweet PotatoesN/AN/AFrost May 28-Jun 11
Moon May 28-29
Swiss ChardFrost Mar 26-Apr 9
Moon Apr 1- 9
Frost Apr 16-23
Moon Apr 16
N/A
ThymeFrost Feb 25-Mar 26
Moon Mar 2-18
Frost May 7-28
Moon May 7-15
N/A
TomatoesFrost Mar 11-26
Moon Mar 11-18
Frost May 14-Jun 4
Moon May 14-15, May 30-Jun 4
N/A
TurnipsN/AN/AFrost Apr 9-30
Moon Apr 17-29
WatermelonsFrost Apr 9-16
Moon Apr 9-16
Frost May 21-Jun 4
Moon May 30-Jun 4
N/A
Winter SquashN/AN/AFrost May 21-Jun 18
Moon May 30-Jun 14
ZucchiniN/AN/AFrost May 21-Jun 18
Moon May 30-Jun 14