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

Planting Calendar for Aspen, 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 September 19 (at ASPEN 1SW, CO climate station).
CropFrost Based on Frost Dates
Start Seeds Indoors by...Plant Seedlings Outdoors by...Start Seeds Outdoors by...
ArugulaN/AN/AFrost Aug 15
BeetsN/AN/AFrost Aug 5
Bell PeppersFrost Apr 6Frost June 29N/A
BroccoliFrost Jun 8Frost Jul 6N/A
CabbageFrost May 29Frost Jun 26N/A
CantaloupesN/AN/AFrost July 6
CarrotsN/AN/AFrost Jul 31
CauliflowerFrost Jun 8Frost Jul 6N/A
CeleryFrost Mar 28Frost June 29N/A
CornN/AN/AFrost July 13
CucumbersN/AN/AFrost July 6
EggplantsFrost Apr 6Frost July 6N/A
Green BeansN/AN/AFrost July 6
Jalapeño PeppersFrost Apr 26Frost June 29N/A
KaleFrost Jun 28Frost Jul 26N/A
KohlrabiN/AN/AFrost Jul 31
LettuceN/AN/AFrost Aug 10
OkraN/AN/AFrost July 6
ParsnipsN/AN/AFrost Jun 16
PeasN/AN/AFrost Jul 16
PotatoesN/AN/AFrost Jul 6
PumpkinsN/AN/AFrost July 6
RadishesN/AN/AFrost Aug 15
SpinachN/AN/AFrost Aug 25
Sweet PotatoesFrost Apr 17Frost July 13N/A
Swiss ChardN/AN/AFrost Aug 10
TomatoesFrost Apr 11Frost July 6N/A
TurnipsN/AN/AFrost Aug 10
WatermelonsN/AN/AFrost July 6
Winter SquashN/AN/AFrost July 20
ZucchiniN/AN/AFrost July 20

Planting Dates for Spring

On average, your last spring frost occurs on June 8 (at ASPEN 1SW, CO climate station, elevation 8175 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost May 25-Jun 8
Moon May 30-Jun 8
BasilFrost Apr 13-27
Moon Apr 13-16
Frost Jun 8-29
Moon Jun 8-14, Jun 28-29
N/A
BeetsN/AN/AFrost May 25-Jun 15
Moon May 25-29, Jun 15
Bell PeppersFrost Mar 30-Apr 13
Moon Apr 1-13
Frost Jun 15-29
Moon Jun 28-29
N/A
BroccoliFrost Apr 13-27
Moon Apr 13-16
Frost May 11-Jun 1
Moon May 11-15, May 30-Jun 1
N/A
CabbageFrost Apr 13-27
Moon Apr 13-16
Frost May 11-25
Moon May 11-15
N/A
CantaloupesFrost May 11-18
Moon May 11-15
Frost Jun 22-Jul 6
Moon Jun 28-Jul 6
N/A
CarrotsN/AN/AFrost May 4-18
Moon May 16-18
CauliflowerFrost Apr 13-27
Moon Apr 13-16
Frost May 11-Jun 1
Moon May 11-15, May 30-Jun 1
N/A
CeleryFrost Mar 30-Apr 13
Moon Apr 1-13
Frost Jun 15-29
Moon Jun 28-29
N/A
ChivesN/AN/AFrost May 11-18
Moon May 11-15
Cilantro (Coriander)N/AN/AFrost Jun 8-22
Moon Jun 8-14
CornN/AN/AFrost Jun 22-Jul 13
Moon Jun 28-Jul 13
CucumbersFrost May 11-18
Moon May 11-15
Frost Jun 22-Jul 6
Moon Jun 28-Jul 6
N/A
DillN/AN/AFrost Jun 8-Jul 13
Moon Jun 8-14, Jun 28-Jul 13
EggplantsFrost Apr 13-27
Moon Apr 13-16
Frost Jun 22-Jul 6
Moon Jun 28-Jul 6
N/A
Green BeansN/AN/AFrost Jun 15-Jul 6
Moon Jun 28-Jul 6
Jalapeño PeppersFrost Mar 30-Apr 13
Moon Apr 1-13
Frost Jun 15-29
Moon Jun 28-29
N/A
KaleFrost Apr 13-27
Moon Apr 13-16
Frost May 11-Jun 1
Moon May 11-15, May 30-Jun 1
N/A
KohlrabiFrost Apr 27-May 11
Moon Apr 30-May 11
Frost May 18-25
N/A
LettuceFrost Apr 27-May 11
Moon Apr 30-May 11
Frost May 25-Jun 22
Moon May 30-Jun 14
N/A
OkraN/AN/AFrost Jun 22-Jul 6
Moon Jun 28-Jul 6
OnionsN/AN/AFrost May 11-Jun 1
Moon May 16-29
OreganoFrost Mar 30-Apr 27
Moon Apr 1-16
Frost Jun 8-29
Moon Jun 8-14, Jun 28-29
N/A
ParsleyN/AN/AFrost May 11-25
Moon May 11-15
ParsnipsN/AN/AFrost May 18-Jun 8
Moon May 18-29
PeasN/AN/AFrost Apr 27-May 18
Moon Apr 30-May 15
PotatoesN/AN/AFrost Jun 1-22
Moon Jun 15-22
PumpkinsFrost May 18-Jun 1
Moon May 30-Jun 1
Frost Jun 22-Jul 6
Moon Jun 28-Jul 6
N/A
RadishesN/AN/AFrost Apr 13-May 4
Moon Apr 17-29
RosemaryFrost Mar 30-Apr 13
Moon Apr 1-13
Frost Jun 15-Jul 6
Moon Jun 28-Jul 6
N/A
SageFrost Apr 13-27
Moon Apr 13-16
Frost Jun 8-22
Moon Jun 8-14
N/A
SpinachN/AN/AFrost Apr 27-May 18
Moon Apr 30-May 15
Sweet PotatoesN/AN/AFrost Jun 29-Jul 13
Swiss ChardFrost Apr 27-May 11
Moon Apr 30-May 11
Frost May 18-25
N/A
ThymeFrost Mar 30-Apr 27
Moon Apr 1-16
Frost Jun 8-29
Moon Jun 8-14, Jun 28-29
N/A
TomatoesFrost Apr 13-27
Moon Apr 13-16
Frost Jun 15-Jul 6
Moon Jun 28-Jul 6
N/A
TurnipsN/AN/AFrost May 11-Jun 1
Moon May 16-29
WatermelonsFrost May 11-18
Moon May 11-15
Frost Jun 22-Jul 6
Moon Jun 28-Jul 6
N/A
Winter SquashN/AN/AFrost Jun 22-Jul 20
Moon Jun 28-Jul 13
ZucchiniN/AN/AFrost Jun 22-Jul 20
Moon Jun 28-Jul 13