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Planting Calendar for Black Eagle, MT | Almanac.com
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Planting Calendar for Black Eagle, MT

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The planting calendar below tells you when to plant in the SPRING and also plant in the FALL, based on your zip code or postal code.

Spring Planting Calendar

Our spring planting calendar starts with the very first dates that you can plant (based on the last spring frost). But if you've missed these dates, no worries! This is why we've added "last planting dates" to our spring calendar; this is meant to help new gardeners understand that if they missed the first spring planting window, they could still get crops in the ground.

In fact, many crops with short maturity times (such as radishes) can be succession planted all the way through the summer in northern areas. However, note that some cool-seasons crops such as kale and lettuce do not grow well in hot temperatures, which can cause bolting issues.  For some gardeners, especially in the South, a break to avoid summer heat is needed, but they can start once the heat has passed. 

The dates provided are based on the number of weeks before or after frost, so we can provide a unique calendar to every user in the country. Thus, several crops (especially similar crops) may appear to have the same date. Kale and lettuce, for example, or dates for starting seeds, like broccoli and cabbage. 

Fall Planting Calendar

When we say "fall," we really mean planting in summer in time for a fall harvest. Think of this as a second summer! It's easy to keep the crops going if you've already prepared the soil! 

Many crops that would be started indoors for a spring crop can just be plunked into the soil directly for a fall crop. Not only is the soil already warm but also there are less pests and it tends to be rainier so you don't need to water as often. Some fall vegetables need to be harvested by the first frost, but many are frost-tolerant and even taste better after a kiss of fall frost!

See each plant's individual Growing Guide for more specific planting, plant care, and harvesting information.

Specifically, on the charts, there are different columns labeled as follows:

  1. Start Seeds Indoors: When to sow seeds indoors to get an early start on the season.
  2. Plant Seedlings Outdoors: When to put small seedlings that you grew indoors (OR starter plants that you bought at a garden nursery) in the outdoor soil.
  3. Start Seeds Outdoors: When to plant seeds directly into the outdoor soil.
  4. Last Date to Plant: You may plant any time from the "start seeds" dates until this "last date." Don't wait any longer, or the crop won't have time to get to harvest before fall/winter frosts.

The "Moon Dates" indicate the best planting dates based on Moon phases. You can learn more about this age-old technique below.

When N/A appears in the chart, that starting method is typically not recommended, although it is likely still possible. 

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Planting Dates for Spring

On average, your last spring frost occurs on May 11 (at GREAT FALLS 16ST, MT climate station, elevation 3503 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds OutdoorsLast Date to Plant
ArugulaFrost Mar 16-30
Moon Mar 16-25
Frost Apr 20-May 4
Moon Apr 20-23
Frost Apr 13-20
Moon Apr 13-20
Aug 28
AsparagusN/AN/AFrost Apr 27-May 11
Moon Apr 27-May 6
May 11
BasilFrost Mar 30-Apr 13
Moon Apr 8-13
Frost May 25-Jun 8
Moon Jun 6-8
Frost May 25-Jun 8
Moon Jun 6-8
Aug 14
BeetsN/AFrost Apr 27-May 11
Moon Apr 27-May 6
Frost Apr 13-20
May 25
Bell PeppersFrost Mar 1-16
Frost May 25-Jun 1
N/AJul 3
Bok ChoyFrost Mar 30-Apr 13
Moon Apr 8-13
Frost May 25-Jun 1
Frost May 25-Jun 1
Jun 22
BroccoliFrost Mar 16-30
Moon Mar 16-25
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 13-20
Moon Apr 13-20
Jul 24
Brussels SproutsFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 13-20
Moon Apr 13-20
Jun 19
CabbageFrost Mar 16-30
Moon Mar 16-25
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 13-20
Moon Apr 13-20
Jun 12
CantaloupesFrost Apr 20-May 4
Moon Apr 20-23
Frost May 11-25
Moon May 11-23
Frost May 18-25
Moon May 18-23
Jun 19
CarrotsN/AN/AFrost Apr 13-27
Moon Apr 24-27
Jul 17
CauliflowerFrost Mar 30-Apr 13
Moon Apr 8-13
Frost May 4-18
Moon May 7-18
N/AJul 17
CeleryFrost Feb 16-Mar 1
Moon Feb 16-24
Frost May 18-Jun 1
Moon May 18-23
Frost May 11
Moon May 11
Jul 17
ChivesFrost Mar 16-30
Moon Mar 16-25
Frost Apr 20-27
Moon Apr 20-23
Frost Apr 20-27
Moon Apr 20-23
Jul 31
Cilantro (Coriander)N/AN/AFrost May 11-25
Moon May 11-23
Jun 1
CollardsFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 20-27
Moon Apr 20-23
Jul 17
CucumbersFrost Apr 20-27
Moon Apr 20-23
Frost May 18-Jun 1
Moon May 18-23
Frost May 25-Jun 1
Jul 17
DillN/AN/AFrost May 4-25
Moon May 7-23
Jul 31
Dry BeansN/AN/AFrost May 25-Jun 1
Jun 19
EggplantsFrost Mar 16-30
Moon Mar 16-25
Frost May 25-Jun 1
N/AJul 17
Fava BeansN/AN/AFrost Apr 13-20
Moon Apr 13-20
May 25
FennelFrost Mar 30-Apr 13
Moon Apr 8-13
Frost May 18-25
Moon May 18-23
Frost May 11-25
Moon May 11-23
Jul 10
GarlicN/AN/AN/A
Green BeansN/AN/AFrost May 18-Jun 8
Moon May 18-23, Jun 6-8
Jul 17
Honeydew MelonsFrost Apr 20-27
Moon Apr 20-23
Frost May 25-Jun 1
Frost May 25-Jun 1
Jun 26
Jalapeño PeppersFrost Mar 1-16
Frost May 25-Jun 1
N/A
KaleFrost Mar 16-30
Moon Mar 16-25
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 13-20
Moon Apr 13-20
May 25
KohlrabiFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 20-27
Moon Apr 20-23
Frost Apr 13-20
Moon Apr 13-20
May 25
LeeksFrost Mar 1-16
Frost Apr 20-May 4
Moon Apr 20-23
N/AJun 12
LettuceFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 20-27
Moon Apr 20-23
Frost Apr 13-20
Moon Apr 13-20
May 25
Mustard GreensN/AN/AN/A
OkraFrost Apr 13-27
Moon Apr 13-23
Frost May 25-Jun 1
Frost May 25-Jun 8
Moon Jun 6-8
Jul 17
OnionsN/AFrost Apr 13-27
Moon Apr 24-27
N/AJun 19
OreganoFrost Mar 1-30
Moon Mar 17-25
Frost May 18-Jun 1
Moon May 18-23
N/AJul 17
ParsleyFrost Mar 1-16
Frost May 18-Jun 1
Moon May 18-23
Frost Apr 13-May 18
Moon Apr 13-23, May 7-18
Jul 10
ParsnipsN/AN/AFrost Apr 13-20
Jun 19
PeasN/AN/AFrost Apr 13-20
Moon Apr 13-20
May 25
PotatoesN/AN/AFrost Apr 13-27
Moon Apr 24-27
Jul 17
PumpkinsFrost Apr 20-May 4
Moon Apr 20-23
Frost May 25-Jun 1
Frost May 25-Jun 1
Jun 12
RadishesN/AN/AFrost Apr 13-20
Jul 31
RosemaryFrost Feb 16-Mar 1
Moon Feb 16-24
Frost May 25-Jun 1
N/AJul 31
SageFrost Mar 16-30
Moon Mar 16-25
Frost May 18-Jun 1
Moon May 18-23
N/AJul 10
SalsifyN/AN/AFrost Apr 13-27
Moon Apr 24-27
Jun 19
SpinachFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 20-27
Moon Apr 20-23
Frost Apr 13-20
Moon Apr 13-20
May 25
Sweet CornN/AN/AFrost May 25-Jun 8
Moon Jun 6-8
Jul 10
Sweet PotatoesN/AN/AFrost May 25-Jun 8
Moon May 25-Jun 5
Jun 12
Swiss ChardFrost Mar 30-Apr 13
Moon Apr 8-13
Frost Apr 27-May 11
Moon May 7-11
Frost Apr 20-May 11
Moon Apr 20-23, May 7-11
May 25
ThymeFrost Mar 1-16
Frost May 18-25
Moon May 18-23
N/AJul 3
TomatillosFrost Mar 30-Apr 13
Moon Apr 8-13
Frost May 25-Jun 8
Moon Jun 6-8
N/AJul 10
TomatoesFrost Mar 16-30
Moon Mar 16-25
Frost May 25-Jun 1
N/AJun 26
TurnipsN/AN/AFrost Apr 13-20
Aug 28
WatermelonsFrost Apr 20-May 4
Moon Apr 20-23
Frost May 25-Jun 1
Frost May 18-25
Moon May 18-23
Jun 26
Winter SquashFrost Apr 20-27
Moon Apr 20-23
Frost May 18-Jun 1
Moon May 18-23
Frost May 25-Jun 1
Jun 5
Zucchini (Summer Squash)Frost Apr 20-27
Moon Apr 20-23
Frost May 18-Jun 1
Moon May 18-23
Frost May 25-Jun 1
Jul 24

Planting Dates for Fall

On average, your first fall frost occurs on September 25 (at GREAT FALLS 16ST, MT climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Aug 7-Sep 11
Moon Aug 7-19, Sep 2-11
N/A40Frost-hardy
BeetsFrost Jul 3-31
Moon Jul 3-4, Jul 22-31
N/A50Frost-tolerant
Bok ChoyFrost Jul 17-Aug 7
Moon Jul 17-21, Aug 4-7
N/A50Frost-tolerant
BroccoliFrost Jun 26-Jul 3
Frost Jul 17-31
Moon Jul 17-21
60Frost-tolerant
Brussels SproutsFrost Jun 5-19
Moon Jun 6-19
N/A100Frost-hardy
CabbageFrost Jun 26-Jul 3
Frost Jul 17-24
Moon Jul 17-21
90Frost-tolerant
CarrotsFrost Jul 10-17
N/A70Frost-tolerant
CauliflowerFrost Jun 19-26
Moon Jun 19-21
Frost Jul 3-10
Moon Jul 5-10
75Frost-tolerant
ChivesFrost Jul 3-31
Moon Jul 5-21
N/A70Frost-tolerant
FennelFrost Jun 26-Jul 10
Moon Jul 5-10
N/A80Tender
GarlicFrost Oct 9-23
Moon Oct 18-23
N/A120Frost-hardy
Green BeansFrost Jul 10-24
Moon Jul 10-21
N/A55Tender
KaleFrost Jul 17-31
Moon Jul 17-21
N/A60Frost-hardy
KohlrabiFrost Jul 24-Aug 14
Moon Aug 4-14
N/A45Frost-tolerant
LettuceFrost Jul 17-31
Moon Jul 17-21
N/A60Frost-tolerant
Mustard GreensFrost Jul 24-Aug 14
Moon Aug 4-14
N/A45Tender
PeasFrost Jul 17-31
Moon Jul 17-21
N/A55Tender
RadishesFrost Aug 14-28
Moon Aug 20-28
N/A25Frost-tolerant
SpinachFrost Aug 7-28
Moon Aug 7-19
N/A30Frost-hardy
Swiss ChardFrost Jul 17-31
Moon Jul 17-21
N/A60Frost-tolerant
TurnipsFrost Jul 24-Aug 7
Moon Jul 24-Aug 3
N/A50Frost-tolerant
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