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

Planting Calendar for Ronan, 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 17 (at POLSON, MT climate station, elevation 3008 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
ArugulaN/AN/AFrost May 3-17
Moon May 3- 5
BasilFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost May 17-Jun 7
Moon May 19-Jun 3
N/A
BeetsN/AN/AFrost May 3-24
Moon May 6-18
Bell PeppersFrost Mar 7-22
Moon Mar 7
Frost May 24-Jun 7
Moon May 24-Jun 3
N/A
BroccoliFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost Apr 19-May 10
Moon Apr 19-May 5
N/A
CabbageFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost Apr 19-May 3
Moon Apr 19-May 3
N/A
CantaloupesFrost Apr 19-26
Moon Apr 19-26
Frost May 31-Jun 14
Moon May 31-Jun 3
N/A
CarrotsN/AN/AFrost Apr 12-26
Moon Apr 12-18
CauliflowerFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost Apr 19-May 10
Moon Apr 19-May 5
N/A
CeleryFrost Mar 7-22
Moon Mar 7
Frost May 24-Jun 7
Moon May 24-Jun 3
N/A
ChivesN/AN/AFrost Apr 19-26
Moon Apr 19-26
Cilantro (Coriander)N/AN/AFrost May 17-31
Moon May 19-31
CornN/AN/AFrost May 31-Jun 21
Moon May 31-Jun 3, Jun 17-21
CucumbersFrost Apr 19-26
Moon Apr 19-26
Frost May 31-Jun 14
Moon May 31-Jun 3
N/A
DillN/AN/AFrost May 17-Jun 21
Moon May 19-Jun 3
EggplantsFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost May 31-Jun 14
Moon May 31-Jun 3
N/A
Fava Beans (Broad Beans)Frost Feb 21-Mar 7
Moon Feb 21-Mar 7
Frost Mar 29-Apr 19
Moon Mar 29-Apr 5, Apr 19
N/A
Green BeansN/AN/AFrost May 24-Jun 14
Moon May 24-Jun 3
Jalapeño PeppersFrost Mar 7-22
Moon Mar 7
Frost May 24-Jun 7
Moon May 24-Jun 3
N/A
KaleFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost Apr 19-May 10
Moon Apr 19-May 5
N/A
KohlrabiFrost Apr 5-19
Moon Apr 5
Frost Apr 26-May 3
Moon Apr 26-May 3
N/A
LettuceFrost Apr 5-19
Moon Apr 5
Frost May 3-31
Moon May 3- 5, May 19-31
N/A
OkraN/AN/AFrost May 31-Jun 14
Moon May 31-Jun 3
OnionsN/AN/AFrost Apr 19-May 10
Moon May 6-10
OreganoFrost Mar 7-Apr 5
Moon Mar 7, Mar 23-Apr 5
Frost May 17-Jun 7
Moon May 19-Jun 3
N/A
ParsleyN/AN/AFrost Apr 19-May 3
Moon Apr 19-May 3
ParsnipsN/AN/AFrost Apr 26-May 17
Moon May 6-17
PeasN/AN/AFrost Apr 5-26
Moon Apr 5, Apr 20-26
PotatoesN/AN/AFrost May 10-31
Moon May 10-18
PumpkinsFrost Apr 26-May 10
Moon Apr 26-May 5
Frost May 31-Jun 14
Moon May 31-Jun 3
N/A
RadishesN/AN/AFrost Mar 22-Apr 12
Moon Apr 6-12
RosemaryFrost Mar 7-22
Moon Mar 7
Frost May 24-Jun 14
Moon May 24-Jun 3
N/A
SageFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost May 17-31
Moon May 19-31
N/A
SpinachN/AN/AFrost Apr 5-26
Moon Apr 5, Apr 20-26
Sweet PotatoesN/AN/AFrost Jun 7-21
Moon Jun 7-16
Swiss ChardFrost Apr 5-19
Moon Apr 5
Frost Apr 26-May 3
Moon Apr 26-May 3
N/A
ThymeFrost Mar 7-Apr 5
Moon Mar 7, Mar 23-Apr 5
Frost May 17-Jun 7
Moon May 19-Jun 3
N/A
TomatoesFrost Mar 22-Apr 5
Moon Mar 22-Apr 5
Frost May 24-Jun 14
Moon May 24-Jun 3
N/A
TurnipsN/AN/AFrost Apr 19-May 10
Moon May 6-10
WatermelonsFrost Apr 19-26
Moon Apr 19-26
Frost May 31-Jun 14
Moon May 31-Jun 3
N/A
Winter SquashN/AN/AFrost May 31-Jun 28
Moon May 31-Jun 3, Jun 17-28
ZucchiniN/AN/AFrost May 31-Jun 28
Moon May 31-Jun 3, Jun 17-28

Planting Dates for Fall

On average, your first fall frost occurs on October 1 (at POLSON, MT climate station).
CropFrost Based on Frost Dates
Start Seeds Indoors by...Plant Seedlings Outdoors by...Start Seeds Outdoors by...
ArugulaN/AN/AFrost Aug 27
BeetsN/AN/AFrost Aug 17
Bell PeppersFrost Apr 18Frost Jun 13N/A
BroccoliFrost Jun 20Frost Jul 18N/A
CabbageFrost Jun 10Frost Jul 8N/A
CantaloupesN/AN/AFrost June 14
CarrotsN/AN/AFrost Aug 12
CauliflowerFrost Jun 20Frost Jul 18N/A
CeleryFrost Apr 9Frost Jun 18N/A
CornN/AN/AFrost Jun 23
CucumbersN/AN/AFrost Jun 28
EggplantsFrost Apr 18Frost June 14N/A
Fava Beans (Broad Beans)N/AN/AFrost Aug 2
Green BeansN/AN/AFrost Jun 28
Jalapeño PeppersFrost May 8Frost Jul 3N/A
KaleFrost Jul 10Frost Aug 7N/A
KohlrabiN/AN/AFrost Aug 12
LettuceN/AN/AFrost Aug 22
OkraN/AN/AFrost Jun 23
ParsnipsN/AN/AFrost Jun 28
PeasN/AN/AFrost Jul 28
PotatoesN/AN/AFrost Jul 18
PumpkinsN/AN/AFrost June 14
RadishesN/AN/AFrost Aug 27
SpinachN/AN/AFrost Sep 6
Sweet PotatoesFrost Apr 29Frost June 21N/A
Swiss ChardN/AN/AFrost Aug 22
TomatoesFrost Apr 23Frost Jun 18N/A
TurnipsN/AN/AFrost Aug 22
WatermelonsN/AN/AFrost June 14
Winter SquashN/AN/AFrost June 28
ZucchiniN/AN/AFrost Jul 3