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

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Planting Calendar for Lewistown, MT

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 May 19 (at LEWISTOWN, MT climate station, elevation 3910 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost May 5-19
Moon May 5
BasilFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 19-Jun 9
Moon May 19-Jun 3
N/A
BeetsN/AN/AFrost May 5-26
Moon May 6-18
Bell PeppersFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 9
Moon May 26-Jun 3
N/A
Bok ChoyFrost Apr 7-21
Moon Apr 19-21
Frost May 26-Jun 9
Moon May 26-Jun 3
N/A
BroccoliFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 21-May 12
Moon Apr 21-May 5
N/A
CabbageFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 21-May 5
Moon Apr 21-May 5
N/A
CantaloupesFrost Apr 21-28
Moon Apr 21-28
Frost Jun 2-16
Moon Jun 2- 3
N/A
CarrotsN/AN/AFrost Apr 14-28
Moon Apr 14-18
CauliflowerFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 21-May 12
Moon Apr 21-May 5
N/A
CeleryFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 9
Moon May 26-Jun 3
N/A
ChivesN/AN/AFrost Apr 21-28
Moon Apr 21-28
Cilantro (Coriander)N/AN/AFrost May 19-Jun 2
Moon May 19-Jun 2
CollardsN/AN/AFrost Apr 21-May 5
Moon Apr 21-May 5
CornN/AN/AFrost Jun 2-23
Moon Jun 2- 3, Jun 17-23
CucumbersFrost Apr 21-28
Moon Apr 21-28
Frost Jun 2-16
Moon Jun 2- 3
N/A
DillN/AN/AFrost May 19-Jun 23
Moon May 19-Jun 3
EggplantsFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Jun 2-16
Moon Jun 2- 3
N/A
Fava Beans (Broad Beans)Frost Feb 23-Mar 9
Moon Feb 23-Mar 7
Frost Mar 31-Apr 21
Moon Mar 31-Apr 5, Apr 19-21
N/A
Green BeansN/AN/AFrost May 26-Jun 16
Moon May 26-Jun 3
Jalapeño PeppersFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 9
Moon May 26-Jun 3
N/A
KaleFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 21-May 12
Moon Apr 21-May 5
N/A
KohlrabiFrost Apr 7-21
Moon Apr 19-21
Frost Apr 28-May 5
Moon Apr 28-May 5
N/A
LettuceFrost Apr 7-21
Moon Apr 19-21
Frost May 5-Jun 2
Moon May 5, May 20-Jun 2
N/A
OkraN/AN/AFrost Jun 2-16
Moon Jun 2- 3
OnionsN/AN/AFrost Apr 21-May 12
Moon May 6-12
OreganoFrost Mar 9-Apr 7
Moon Mar 21-Apr 5
Frost May 19-Jun 9
Moon May 19-Jun 3
N/A
ParsleyN/AN/AFrost Apr 21-May 5
Moon Apr 21-May 5
ParsnipsN/AN/AFrost Apr 28-May 19
Moon May 6-18
PeasN/AN/AFrost Apr 7-28
Moon Apr 19-28
PotatoesN/AN/AFrost Apr 21-May 5
PumpkinsFrost Apr 28-May 12
Moon Apr 28-May 5
Frost Jun 2-16
Moon Jun 2- 3
N/A
RadishesN/AN/AFrost Mar 24-Apr 14
Moon Apr 6-14
RosemaryFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 16
Moon May 26-Jun 3
N/A
SageFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 19-Jun 2
Moon May 19-Jun 2
N/A
SpinachN/AN/AFrost Apr 7-28
Moon Apr 19-28
Sweet PotatoesN/AN/AFrost Jun 9-23
Moon Jun 9-16
Swiss ChardFrost Apr 7-21
Moon Apr 19-21
Frost Apr 28-May 5
Moon Apr 28-May 5
N/A
ThymeFrost Mar 9-Apr 7
Moon Mar 21-Apr 5
Frost May 19-Jun 9
Moon May 19-Jun 3
N/A
TomatillosFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Jun 9-23
Moon Jun 17-23
N/A
TomatoesFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 26-Jun 16
Moon May 26-Jun 3
N/A
TurnipsN/AN/AFrost Apr 21-May 12
Moon May 6-12
WatermelonsFrost Apr 21-28
Moon Apr 21-28
Frost Jun 2-16
Moon Jun 2- 3
N/A
Winter SquashN/AN/AFrost Jun 2-30
Moon Jun 2- 3, Jun 17-30
Zucchini and Summer SquashN/AN/AFrost Jun 2-30
Moon Jun 2- 3, Jun 17-30

Planting Dates for Fall

On average, your first fall frost occurs on September 23 (at LEWISTOWN, MT climate station).
CropFrost Based on Frost Dates
Start Seeds Indoors by...Plant Seedlings Outdoors by...Start Seeds Outdoors by...
ArugulaN/AN/AFrost Aug 19
BeetsN/AN/AFrost Aug 9
Bell PeppersFrost Apr 10Frost June 9N/A
Bok ChoyN/AN/AFrost Aug 14
BroccoliFrost Jun 12Frost Jul 10N/A
CabbageFrost Jun 2Frost Jun 30N/A
CantaloupesN/AN/AFrost June 16
CarrotsN/AN/AFrost Aug 4
CauliflowerFrost Jun 12Frost Jul 10N/A
CeleryFrost Apr 1Frost Jun 10N/A
CollardsN/AN/AFrost Jul 25
CornN/AN/AFrost June 23
CucumbersN/AN/AFrost Jun 20
EggplantsFrost Apr 10Frost June 16N/A
Fava Beans (Broad Beans)N/AN/AFrost Jul 25
Green BeansN/AN/AFrost Jun 20
Jalapeño PeppersFrost Apr 30Frost Jun 25N/A
KaleFrost Jul 2Frost Jul 30N/A
KohlrabiN/AN/AFrost Aug 4
LettuceN/AN/AFrost Aug 14
OkraN/AN/AFrost June 16
ParsnipsN/AN/AFrost Jun 20
PeasN/AN/AFrost Jul 20
PotatoesN/AN/AFrost Jun 5
PumpkinsN/AN/AFrost June 16
RadishesN/AN/AFrost Aug 19
SpinachN/AN/AFrost Aug 29
Sweet PotatoesFrost Apr 21Frost June 23N/A
Swiss ChardN/AN/AFrost Aug 14
TomatillosN/AN/AFrost June 23
TomatoesFrost Apr 15Frost June 16N/A
TurnipsN/AN/AFrost Aug 14
WatermelonsN/AN/AFrost June 16
Winter SquashN/AN/AFrost June 30
Zucchini and Summer SquashN/AN/AFrost June 30
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