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

Planting Calendar for Ulm, 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 Fall

On average, your first fall frost occurs on September 23 (at GREAT FALLS WFO, 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 8N/A
BroccoliFrost Jun 12Frost Jul 10N/A
CabbageFrost Jun 2Frost Jun 30N/A
CantaloupesN/AN/AFrost June 15
CarrotsN/AN/AFrost Aug 4
CauliflowerFrost Jun 12Frost Jul 10N/A
CeleryFrost Apr 1Frost Jun 10N/A
CornN/AN/AFrost June 22
CucumbersN/AN/AFrost Jun 20
EggplantsFrost Apr 10Frost June 15N/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 Jun 15
ParsnipsN/AN/AFrost Jun 20
PeasN/AN/AFrost Jul 20
PotatoesN/AN/AFrost Jul 10
PumpkinsN/AN/AFrost June 15
RadishesN/AN/AFrost Aug 19
SpinachN/AN/AFrost Aug 29
Sweet PotatoesFrost Apr 21Frost June 22N/A
Swiss ChardN/AN/AFrost Aug 14
TomatoesFrost Apr 15Frost June 15N/A
TurnipsN/AN/AFrost Aug 14
WatermelonsN/AN/AFrost June 15
Winter SquashN/AN/AFrost June 29
ZucchiniN/AN/AFrost June 29

Planting Dates for Spring

On average, your last spring frost occurs on May 18 (at GREAT FALLS WFO, MT climate station, elevation 3704 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost May 4-18
Moon May 4- 5
BasilFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost May 18-Jun 8
Moon May 19-Jun 3
N/A
BeetsN/AN/AFrost May 4-25
Moon May 6-18
Bell PeppersFrost Mar 8-23
Moon Mar 21-23
Frost May 25-Jun 8
Moon May 25-Jun 3
N/A
BroccoliFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost Apr 20-May 11
Moon Apr 20-May 5
N/A
CabbageFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost Apr 20-May 4
Moon Apr 20-May 4
N/A
CantaloupesFrost Apr 20-27
Moon Apr 20-27
Frost Jun 1-15
Moon Jun 1- 3
N/A
CarrotsN/AN/AFrost Apr 13-27
Moon Apr 13-18
CauliflowerFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost Apr 20-May 11
Moon Apr 20-May 5
N/A
CeleryFrost Mar 8-23
Moon Mar 21-23
Frost May 25-Jun 8
Moon May 25-Jun 3
N/A
ChivesN/AN/AFrost Apr 20-27
Moon Apr 20-27
Cilantro (Coriander)N/AN/AFrost May 18-Jun 1
Moon May 19-Jun 1
CornN/AN/AFrost Jun 1-22
Moon Jun 1- 3, Jun 17-22
CucumbersFrost Apr 20-27
Moon Apr 20-27
Frost Jun 1-15
Moon Jun 1- 3
N/A
DillN/AN/AFrost May 18-Jun 22
Moon May 19-Jun 3
EggplantsFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost Jun 1-15
Moon Jun 1- 3
N/A
Fava Beans (Broad Beans)Frost Feb 22-Mar 8
Moon Feb 22-Mar 7
Frost Mar 30-Apr 20
Moon Mar 30-Apr 5, Apr 19-20
N/A
Green BeansN/AN/AFrost May 25-Jun 15
Moon May 25-Jun 3
Jalapeño PeppersFrost Mar 8-23
Moon Mar 21-23
Frost May 25-Jun 8
Moon May 25-Jun 3
N/A
KaleFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost Apr 20-May 11
Moon Apr 20-May 5
N/A
KohlrabiFrost Apr 6-20
Moon Apr 19-20
Frost Apr 27-May 4
Moon Apr 27-May 4
N/A
LettuceFrost Apr 6-20
Moon Apr 19-20
Frost May 4-Jun 1
Moon May 4- 5, May 19-Jun 1
N/A
OkraN/AN/AFrost Jun 1-15
Moon Jun 1- 3
OnionsN/AN/AFrost Apr 20-May 11
Moon May 6-11
OreganoFrost Mar 8-Apr 6
Moon Mar 21-Apr 5
Frost May 18-Jun 8
Moon May 19-Jun 3
N/A
ParsleyN/AN/AFrost Apr 20-May 4
Moon Apr 20-May 4
ParsnipsN/AN/AFrost Apr 27-May 18
Moon May 6-18
PeasN/AN/AFrost Apr 6-27
Moon Apr 19-27
PotatoesN/AN/AFrost May 11-Jun 1
Moon May 11-18
PumpkinsFrost Apr 27-May 11
Moon Apr 27-May 5
Frost Jun 1-15
Moon Jun 1- 3
N/A
RadishesN/AN/AFrost Mar 23-Apr 13
Moon Apr 6-13
RosemaryFrost Mar 8-23
Moon Mar 21-23
Frost May 25-Jun 15
Moon May 25-Jun 3
N/A
SageFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost May 18-Jun 1
Moon May 19-Jun 1
N/A
SpinachN/AN/AFrost Apr 6-27
Moon Apr 19-27
Sweet PotatoesN/AN/AFrost Jun 8-22
Moon Jun 8-16
Swiss ChardFrost Apr 6-20
Moon Apr 19-20
Frost Apr 27-May 4
Moon Apr 27-May 4
N/A
ThymeFrost Mar 8-Apr 6
Moon Mar 21-Apr 5
Frost May 18-Jun 8
Moon May 19-Jun 3
N/A
TomatoesFrost Mar 23-Apr 6
Moon Mar 23-Apr 5
Frost May 25-Jun 15
Moon May 25-Jun 3
N/A
TurnipsN/AN/AFrost Apr 20-May 11
Moon May 6-11
WatermelonsFrost Apr 20-27
Moon Apr 20-27
Frost Jun 1-15
Moon Jun 1- 3
N/A
Winter SquashN/AN/AFrost Jun 1-29
Moon Jun 1- 3, Jun 17-29
ZucchiniN/AN/AFrost Jun 1-29
Moon Jun 1- 3, Jun 17-29