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Planting Calendar for Casper Mountain, WY | Almanac.com
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Planting Calendar for Casper Mountain, WY

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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 28 (at BATES CREEK #2, WY climate station, elevation 6043 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds OutdoorsLast Date to Plant
ArugulaFrost Apr 2-16
Moon Apr 8-16
Frost May 7-21
Moon May 7-21
Frost Apr 30-May 7
Moon May 7
Aug 24
AsparagusN/AN/AFrost May 14-28
Moon May 24-28
May 28
BasilFrost Apr 16-30
Moon Apr 16-23
Frost Jun 11-25
Moon Jun 11-21
Frost Jun 11-25
Moon Jun 11-21
Aug 10
BeetsN/AFrost May 14-28
Moon May 24-28
Frost Apr 30-May 7
Moon Apr 30-May 6
Jun 11
Bell PeppersFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Jun 11-18
Moon Jun 11-18
N/AJun 29
Bok ChoyFrost Apr 16-30
Moon Apr 16-23
Frost Jun 11-18
Moon Jun 11-18
Frost Jun 11-18
Moon Jun 11-18
Jul 9
BroccoliFrost Apr 2-16
Moon Apr 8-16
Frost May 14-28
Moon May 14-23
Frost Apr 30-May 7
Moon May 7
Jul 20
Brussels SproutsFrost Apr 16-30
Moon Apr 16-23
Frost May 14-28
Moon May 14-23
Frost Apr 30-May 7
Moon May 7
Jun 15
CabbageFrost Apr 2-16
Moon Apr 8-16
Frost May 14-28
Moon May 14-23
Frost Apr 30-May 7
Moon May 7
Jun 8
CantaloupesFrost May 7-21
Moon May 7-21
Frost May 28-Jun 11
Moon Jun 6-11
Frost Jun 4-11
Moon Jun 6-11
Jun 15
CarrotsN/AN/AFrost Apr 30-May 14
Moon Apr 30-May 6
Jul 13
CauliflowerFrost Apr 16-30
Moon Apr 16-23
Frost May 21-Jun 4
Moon May 21-23
N/AJul 13
CeleryFrost Mar 4-19
Frost Jun 4-18
Moon Jun 6-18
Frost May 28
Jul 13
ChivesFrost Apr 2-16
Moon Apr 8-16
Frost May 7-14
Moon May 7-14
Frost May 7-14
Moon May 7-14
Jul 27
Cilantro (Coriander)N/AN/AFrost May 28-Jun 11
Moon Jun 6-11
Jun 18
CollardsFrost Apr 16-30
Moon Apr 16-23
Frost May 14-28
Moon May 14-23
Frost May 7-14
Moon May 7-14
Jul 13
CucumbersFrost May 7-14
Moon May 7-14
Frost Jun 4-18
Moon Jun 6-18
Frost Jun 11-18
Moon Jun 11-18
Jul 13
DillN/AN/AFrost May 21-Jun 11
Moon May 21-23, Jun 6-11
Jul 27
Dry BeansN/AN/AFrost Jun 11-18
Moon Jun 11-18
Jun 15
EggplantsFrost Apr 2-16
Moon Apr 8-16
Frost Jun 11-18
Moon Jun 11-18
N/AJul 13
Fava BeansN/AN/AFrost Apr 30-May 7
Moon May 7
Jun 11
FennelFrost Apr 16-30
Moon Apr 16-23
Frost Jun 4-11
Moon Jun 6-11
Frost May 28-Jun 11
Moon Jun 6-11
Jul 6
GarlicN/AN/AN/A
Green BeansN/AN/AFrost Jun 4-25
Moon Jun 6-21
Jul 13
Honeydew MelonsFrost May 7-14
Moon May 7-14
Frost Jun 11-18
Moon Jun 11-18
Frost Jun 11-18
Moon Jun 11-18
Jun 22
Jalapeño PeppersFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Jun 11-18
Moon Jun 11-18
N/A
KaleFrost Apr 2-16
Moon Apr 8-16
Frost May 14-28
Moon May 14-23
Frost Apr 30-May 7
Moon May 7
Jun 11
KohlrabiFrost Apr 16-30
Moon Apr 16-23
Frost May 7-14
Moon May 7-14
Frost Apr 30-May 7
Moon May 7
Jun 11
LeeksFrost Mar 19-Apr 2
Moon Mar 19-25
Frost May 7-21
Moon May 7-21
N/AJun 8
LettuceFrost Apr 16-30
Moon Apr 16-23
Frost May 7-14
Moon May 7-14
Frost Apr 30-May 7
Moon May 7
Jun 11
Mustard GreensN/AN/AN/A
OkraFrost Apr 30-May 14
Moon May 7-14
Frost Jun 11-18
Moon Jun 11-18
Frost Jun 11-25
Moon Jun 11-21
Jul 13
OnionsN/AFrost Apr 30-May 14
Moon Apr 30-May 6
N/AJun 15
OreganoFrost Mar 19-Apr 16
Moon Mar 19-25, Apr 8-16
Frost Jun 4-18
Moon Jun 6-18
N/AJul 13
ParsleyFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Jun 4-18
Moon Jun 6-18
Frost Apr 30-Jun 4
Moon May 7-23
Jul 6
ParsnipsN/AN/AFrost Apr 30-May 7
Moon Apr 30-May 6
Jun 15
PeasN/AN/AFrost Apr 30-May 7
Moon May 7
Jun 11
PotatoesN/AN/AFrost Apr 30-May 14
Moon Apr 30-May 6
Jul 13
PumpkinsFrost May 7-21
Moon May 7-21
Frost Jun 11-18
Moon Jun 11-18
Frost Jun 11-18
Moon Jun 11-18
Jun 8
RadishesN/AN/AFrost Apr 30-May 7
Moon Apr 30-May 6
Jul 27
RosemaryFrost Mar 4-19
Frost Jun 11-18
Moon Jun 11-18
N/AJul 27
SageFrost Apr 2-16
Moon Apr 8-16
Frost Jun 4-18
Moon Jun 6-18
N/AJul 6
SalsifyN/AN/AFrost Apr 30-May 14
Moon Apr 30-May 6
Jun 15
SpinachFrost Apr 16-30
Moon Apr 16-23
Frost May 7-14
Moon May 7-14
Frost Apr 30-May 7
Moon May 7
Jun 11
Sweet CornN/AN/AFrost Jun 11-25
Moon Jun 11-21
Jul 6
Sweet PotatoesN/AN/AFrost Jun 11-25
Moon Jun 22-25
Jun 8
Swiss ChardFrost Apr 16-30
Moon Apr 16-23
Frost May 14-28
Moon May 14-23
Frost May 7-28
Moon May 7-23
Jun 11
ThymeFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Jun 4-11
Moon Jun 6-11
N/AJun 29
TomatillosFrost Apr 16-30
Moon Apr 16-23
Frost Jun 11-25
Moon Jun 11-21
N/AJul 6
TomatoesFrost Apr 2-16
Moon Apr 8-16
Frost Jun 11-18
Moon Jun 11-18
N/AJun 22
TurnipsN/AN/AFrost Apr 30-May 7
Moon Apr 30-May 6
Aug 24
WatermelonsFrost May 7-21
Moon May 7-21
Frost Jun 11-18
Moon Jun 11-18
Frost Jun 4-11
Moon Jun 6-11
Jun 22
Winter SquashFrost May 7-14
Moon May 7-14
Frost Jun 4-18
Moon Jun 6-18
Frost Jun 11-18
Moon Jun 11-18
Jun 1
Zucchini (Summer Squash)Frost May 7-14
Moon May 7-14
Frost Jun 4-18
Moon Jun 6-18
Frost Jun 11-18
Moon Jun 11-18
Jul 20

Planting Dates for Fall

On average, your first fall frost occurs on September 21 (at BATES CREEK #2, WY climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Aug 3-Sep 7
Moon Aug 4-19
N/A40Frost-hardy
BeetsFrost Jun 29-Jul 27
Moon Jun 29-Jul 4, Jul 22-27
N/A50Frost-tolerant
Bok ChoyFrost Jul 13-Aug 3
Moon Jul 13-21
N/A50Frost-tolerant
BroccoliFrost Jun 22-29
Frost Jul 13-27
Moon Jul 13-21
60Frost-tolerant
Brussels SproutsFrost Jun 1-15
Moon Jun 6-15
N/A100Frost-hardy
CabbageFrost Jun 22-29
Frost Jul 13-20
Moon Jul 13-20
90Frost-tolerant
CarrotsFrost Jul 6-13
N/A70Frost-tolerant
CauliflowerFrost Jun 15-22
Moon Jun 15-21
Frost Jun 29-Jul 6
Moon Jul 5-6
75Frost-tolerant
ChivesFrost Jun 29-Jul 27
Moon Jul 5-21
N/A70Frost-tolerant
FennelFrost Jun 22-Jul 6
Moon Jul 5-6
N/A80Tender
GarlicFrost Oct 5-19
Moon Oct 18-19
N/A120Frost-hardy
Green BeansFrost Jul 6-20
Moon Jul 6-20
N/A55Tender
KaleFrost Jul 13-27
Moon Jul 13-21
N/A60Frost-hardy
KohlrabiFrost Jul 20-Aug 10
Moon Jul 20-21, Aug 4-10
N/A45Frost-tolerant
LettuceFrost Jul 13-27
Moon Jul 13-21
N/A60Frost-tolerant
Mustard GreensFrost Jul 20-Aug 10
Moon Jul 20-21, Aug 4-10
N/A45Tender
PeasFrost Jul 13-27
Moon Jul 13-21
N/A55Tender
RadishesFrost Aug 10-24
Moon Aug 20-24
N/A25Frost-tolerant
SpinachFrost Aug 3-24
Moon Aug 4-19
N/A30Frost-hardy
Swiss ChardFrost Jul 13-27
Moon Jul 13-21
N/A60Frost-tolerant
TurnipsFrost Jul 20-Aug 3
Moon Jul 22-Aug 3
N/A50Frost-tolerant
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