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Planting Calendar for Lyman, 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-season 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 June 21 (at MTN VIEW, WY climate station, elevation 6801 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 26-May 10
Moon Apr 27-May 10
Frost May 31-Jun 14
Moon May 31-Jun 11
Frost May 24-31
Moon May 26-31
Aug 6
AsparagusN/AN/AFrost Jun 7-21
Moon Jun 12-21
Jun 21
BasilFrost May 10-24
Moon May 10-12
Frost Jul 5-19
Moon Jul 5-10
Frost Jul 5-19
Moon Jul 5-10
Jul 23
BeetsN/AFrost Jun 7-21
Moon Jun 12-21
Frost May 24-31
Moon May 24-25
Jul 5
Bell PeppersFrost Apr 12-26
Moon Apr 12
Frost Jul 5-12
Moon Jul 5-10
N/AJun 11
Bok ChoyFrost May 10-24
Moon May 10-12
Frost Jul 5-12
Moon Jul 5-10
Frost Jul 5-12
Moon Jul 5-10
Aug 2
BroccoliFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jun 7-21
Moon Jun 7-11
Frost May 24-31
Moon May 26-31
Jul 2
Brussels SproutsFrost May 10-24
Moon May 10-12
Frost Jun 7-21
Moon Jun 7-11
Frost May 24-31
Moon May 26-31
May 28
CabbageFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jun 7-21
Moon Jun 7-11
Frost May 24-31
Moon May 26-31
Jun 28
CantaloupesFrost May 31-Jun 14
Moon May 31-Jun 11
Frost Jun 21-Jul 5
Moon Jun 25-Jul 5
Frost Jun 28-Jul 5
Moon Jun 28-Jul 5
May 28
CarrotsN/AN/AFrost May 24-Jun 7
Moon May 24-25
Jun 25
CauliflowerFrost May 10-24
Moon May 10-12
Frost Jun 14-28
Moon Jun 25-28
N/AJun 18
CeleryFrost Mar 29-Apr 12
Moon Mar 29-Apr 12
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
Frost Jun 21
Jun 25
ChivesFrost Apr 26-May 10
Moon Apr 27-May 10
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jul 9
Cilantro (Coriander)N/AN/AFrost Jun 21-Jul 5
Moon Jun 25-Jul 5
Jul 12
CollardsFrost May 10-24
Moon May 10-12
Frost Jun 7-21
Moon Jun 7-11
Frost May 31-Jun 7
Moon May 31-Jun 7
Jun 25
CucumbersFrost May 31-Jun 7
Moon May 31-Jun 7
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
Frost Jul 5-12
Moon Jul 5-10
Jun 25
DillN/AN/AFrost Jun 14-Jul 5
Moon Jun 25-Jul 5
Jul 9
Dry BeansN/AN/AFrost Jul 5-12
Moon Jul 5-10
May 28
EggplantsFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jul 5-12
Moon Jul 5-10
N/AJun 25
Fava BeansN/AN/AFrost May 24-31
Moon May 26-31
Jul 5
FennelFrost May 10-24
Moon May 10-12
Frost Jun 28-Jul 5
Moon Jun 28-Jul 5
Frost Jun 21-Jul 5
Moon Jun 25-Jul 5
Jun 18
GarlicN/AN/AN/A
Green BeansN/AN/AFrost Jun 28-Jul 19
Moon Jun 28-Jul 10
Jun 25
Honeydew MelonsFrost May 31-Jun 7
Moon May 31-Jun 7
Frost Jul 5-12
Moon Jul 5-10
Frost Jul 5-12
Moon Jul 5-10
Jun 4
Jalapeño PeppersFrost Apr 12-26
Moon Apr 12
Frost Jul 5-12
Moon Jul 5-10
N/A
KaleFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jun 7-21
Moon Jun 7-11
Frost May 24-31
Moon May 26-31
Jul 5
KohlrabiFrost May 10-24
Moon May 10-12
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 24-31
Moon May 26-31
Jul 5
LeeksFrost Apr 12-26
Moon Apr 12
Frost May 31-Jun 14
Moon May 31-Jun 11
N/AMay 21
LettuceFrost May 10-24
Moon May 10-12
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 24-31
Moon May 26-31
Jul 5
MicrogreensN/AN/AN/A
Mustard GreensN/AN/AN/A
OkraFrost May 24-Jun 7
Moon May 26-Jun 7
Frost Jul 5-12
Moon Jul 5-10
Frost Jul 5-19
Moon Jul 5-10
Jun 25
OnionsN/AFrost May 24-Jun 7
Moon May 24-25
N/AMay 28
OreganoFrost Apr 12-May 10
Moon Apr 12, Apr 27-May 10
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
N/AJun 25
ParsleyFrost Apr 12-26
Moon Apr 12
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
Frost May 24-Jun 28
Moon May 26-Jun 11
Jun 18
ParsnipsN/AN/AFrost May 24-31
Moon May 24-25
May 28
PeanutsN/AN/AFrost Jul 12-26
Moon Jul 12-23
PeasN/AN/AFrost May 24-31
Moon May 26-31
Jul 5
PotatoesN/AN/AFrost May 24-Jun 7
Moon May 24-25
Jun 25
PumpkinsFrost May 31-Jun 14
Moon May 31-Jun 11
Frost Jul 5-12
Moon Jul 5-10
Frost Jul 5-12
Moon Jul 5-10
May 21
RadishesN/AN/AFrost May 24-31
Moon May 24-25
Jul 9
RosemaryFrost Mar 29-Apr 12
Moon Mar 29-Apr 12
Frost Jul 5-12
Moon Jul 5-10
N/AJul 9
SageFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
N/AJun 18
SalsifyN/AN/AFrost May 24-Jun 7
Moon May 24-25
May 28
SpinachFrost May 10-24
Moon May 10-12
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 24-31
Moon May 26-31
Jul 5
Sweet CornN/AN/AFrost Jul 5-19
Moon Jul 5-10
Jun 18
Sweet PotatoesN/AN/AFrost Jul 5-19
Moon Jul 11-19
May 21
Swiss ChardFrost May 10-24
Moon May 10-12
Frost Jun 7-21
Moon Jun 7-11
Frost May 31-Jun 21
Moon May 31-Jun 11
Jul 5
ThymeFrost Apr 12-26
Moon Apr 12
Frost Jun 28-Jul 5
Moon Jun 28-Jul 5
N/AJun 11
TomatillosFrost May 10-24
Moon May 10-12
Frost Jul 5-19
Moon Jul 5-10
N/AJun 18
TomatoesFrost Apr 26-May 10
Moon Apr 27-May 10
Frost Jul 5-12
Moon Jul 5-10
N/AJun 4
TurnipsN/AN/AFrost May 24-31
Moon May 24-25
Aug 6
WatermelonsFrost May 31-Jun 14
Moon May 31-Jun 11
Frost Jul 5-12
Moon Jul 5-10
Frost Jun 28-Jul 5
Moon Jun 28-Jul 5
Jun 4
Winter SquashFrost May 31-Jun 7
Moon May 31-Jun 7
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
Frost Jul 5-12
Moon Jul 5-10
May 14
Zucchini (Summer Squash)Frost May 31-Jun 7
Moon May 31-Jun 7
Frost Jun 28-Jul 12
Moon Jun 28-Jul 10
Frost Jul 5-12
Moon Jul 5-10
Jul 2

Planting Dates for Fall

On average, your first fall frost occurs on September 3 (at MTN VIEW, WY climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Jul 16-Aug 20
Moon Jul 24-Aug 9
N/A40Frost-hardy
BeetsFrost Jun 11-Jul 9
Moon Jun 12-24
N/A50Frost-tolerant
Bok ChoyFrost Jun 25-Jul 16
Moon Jun 25-Jul 10
N/A50Frost-tolerant
BroccoliFrost Jun 4-11
Moon Jun 4-11
Frost Jun 25-Jul 9
Moon Jun 25-Jul 9
60Frost-tolerant
Brussels SproutsFrost May 14-28
Moon May 26-28
N/A100Frost-hardy
CabbageFrost Jun 4-11
Moon Jun 4-11
Frost Jun 25-Jul 2
Moon Jun 25-Jul 2
90Frost-tolerant
CarrotsFrost Jun 18-25
Moon Jun 18-24
N/A70Frost-tolerant
CauliflowerFrost May 28-Jun 4
Moon May 28-Jun 4
Frost Jun 11-18
Moon Jun 11
75Frost-tolerant
ChivesFrost Jun 11-Jul 9
Moon Jun 11, Jun 26-Jul 9
N/A70Frost-tolerant
FennelFrost Jun 4-18
Moon Jun 4-11
N/A80Tender
GarlicFrost Sep 17-Oct 1
Moon Sep 17-20
N/A120Frost-hardy
Green BeansFrost Jun 18-Jul 2
Moon Jun 25-Jul 2
N/A55Tender
KaleFrost Jun 25-Jul 9
Moon Jun 25-Jul 9
N/A60Frost-hardy
KohlrabiFrost Jul 2-23
Moon Jul 2-10
N/A45Frost-tolerant
LettuceFrost Jun 25-Jul 9
Moon Jun 25-Jul 9
N/A60Frost-tolerant
Mustard GreensFrost Jul 2-23
Moon Jul 2-10
N/A45Tender
PeasFrost Jun 25-Jul 9
Moon Jun 25-Jul 9
N/A55Tender
RadishesFrost Jul 23-Aug 6
Moon Jul 23
N/A25Frost-tolerant
SpinachFrost Jul 16-Aug 6
Moon Jul 24-Aug 6
N/A30Frost-hardy
Swiss ChardFrost Jun 25-Jul 9
Moon Jun 25-Jul 9
N/A60Frost-tolerant
TurnipsFrost Jul 2-16
Moon Jul 11-16
N/A50Frost-tolerant
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