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Planting Calendar for Granby, CO | Almanac.com
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Planting Calendar for Granby, CO

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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 June 19 (at GRAND LAKE 6 SSW, CO climate station, elevation 8287 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 24-May 8
Moon May 7-8
Frost May 29-Jun 12
Moon Jun 6-12
Frost May 22-29
Moon May 22-23
Aug 5
AsparagusN/AN/AFrost Jun 5-19
Moon Jun 5
Jun 19
BasilFrost May 8-22
Moon May 8-22
Frost Jul 3-17
Moon Jul 5-17
Frost Jul 3-17
Moon Jul 5-17
Jul 22
BeetsN/AFrost Jun 5-19
Moon Jun 5
Frost May 22-29
Moon May 24-29
Jul 3
Bell PeppersFrost Apr 10-24
Moon Apr 10-23
Frost Jul 3-10
Moon Jul 5-10
N/AJun 10
Bok ChoyFrost May 8-22
Moon May 8-22
Frost Jul 3-10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
Jul 31
BroccoliFrost Apr 24-May 8
Moon May 7-8
Frost Jun 5-19
Moon Jun 6-19
Frost May 22-29
Moon May 22-23
Jul 1
Brussels SproutsFrost May 8-22
Moon May 8-22
Frost Jun 5-19
Moon Jun 6-19
Frost May 22-29
Moon May 22-23
May 27
CabbageFrost Apr 24-May 8
Moon May 7-8
Frost Jun 5-19
Moon Jun 6-19
Frost May 22-29
Moon May 22-23
May 20
CantaloupesFrost May 29-Jun 12
Moon Jun 6-12
Frost Jun 19-Jul 3
Moon Jun 19-21
Frost Jun 26-Jul 3
May 27
CarrotsN/AN/AFrost May 22-Jun 5
Moon May 24-Jun 5
Jun 24
CauliflowerFrost May 8-22
Moon May 8-22
Frost Jun 12-26
Moon Jun 12-21
N/AJun 24
CeleryFrost Mar 27-Apr 10
Moon Apr 8-10
Frost Jun 26-Jul 10
Moon Jul 5-10
Frost Jun 19
Moon Jun 19
Jun 24
ChivesFrost Apr 24-May 8
Moon May 7-8
Frost May 29-Jun 5
Frost May 29-Jun 5
Jul 8
Cilantro (Coriander)N/AN/AFrost Jun 19-Jul 3
Moon Jun 19-21
Jul 10
CollardsFrost May 8-22
Moon May 8-22
Frost Jun 5-19
Moon Jun 6-19
Frost May 29-Jun 5
Jun 24
CucumbersFrost May 29-Jun 5
Frost Jun 26-Jul 10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
Jun 24
DillN/AN/AFrost Jun 12-Jul 3
Moon Jun 12-21
Jul 8
Dry BeansN/AN/AFrost Jul 3-10
Moon Jul 5-10
May 27
EggplantsFrost Apr 24-May 8
Moon May 7-8
Frost Jul 3-10
Moon Jul 5-10
N/AJun 24
Fava BeansN/AN/AFrost May 22-29
Moon May 22-23
Jul 3
FennelFrost May 8-22
Moon May 8-22
Frost Jun 26-Jul 3
Frost Jun 19-Jul 3
Moon Jun 19-21
Jun 17
GarlicN/AN/AN/A
Green BeansN/AN/AFrost Jun 26-Jul 17
Moon Jul 5-17
Jun 24
Honeydew MelonsFrost May 29-Jun 5
Frost Jul 3-10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
Jun 3
Jalapeño PeppersFrost Apr 10-24
Moon Apr 10-23
Frost Jul 3-10
Moon Jul 5-10
N/A
KaleFrost Apr 24-May 8
Moon May 7-8
Frost Jun 5-19
Moon Jun 6-19
Frost May 22-29
Moon May 22-23
Jul 3
KohlrabiFrost May 8-22
Moon May 8-22
Frost May 29-Jun 5
Frost May 22-29
Moon May 22-23
Jul 3
LeeksFrost Apr 10-24
Moon Apr 10-23
Frost May 29-Jun 12
Moon Jun 6-12
N/AMay 20
LettuceFrost May 8-22
Moon May 8-22
Frost May 29-Jun 5
Frost May 22-29
Moon May 22-23
Jul 3
Mustard GreensN/AN/AN/A
OkraFrost May 22-Jun 5
Moon May 22-23
Frost Jul 3-10
Moon Jul 5-10
Frost Jul 3-17
Moon Jul 5-17
Jun 24
OnionsN/AFrost May 22-Jun 5
Moon May 24-Jun 5
N/AMay 27
OreganoFrost Apr 10-May 8
Moon Apr 10-23, May 7-8
Frost Jun 26-Jul 10
Moon Jul 5-10
N/AJun 24
ParsleyFrost Apr 10-24
Moon Apr 10-23
Frost Jun 26-Jul 10
Moon Jul 5-10
Frost May 22-Jun 26
Moon May 22-23, Jun 6-21
Jun 17
ParsnipsN/AN/AFrost May 22-29
Moon May 24-29
May 27
PeanutsN/AN/AFrost Jul 10-24
Moon Jul 22-24
PeasN/AN/AFrost May 22-29
Moon May 22-23
Jul 3
PotatoesN/AN/AFrost May 22-Jun 5
Moon May 24-Jun 5
Jun 24
PumpkinsFrost May 29-Jun 12
Moon Jun 6-12
Frost Jul 3-10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
May 20
RadishesN/AN/AFrost May 22-29
Moon May 24-29
Jul 8
RosemaryFrost Mar 27-Apr 10
Moon Apr 8-10
Frost Jul 3-10
Moon Jul 5-10
N/AJul 8
SageFrost Apr 24-May 8
Moon May 7-8
Frost Jun 26-Jul 10
Moon Jul 5-10
N/AJun 17
SalsifyN/AN/AFrost May 22-Jun 5
Moon May 24-Jun 5
May 27
SpinachFrost May 8-22
Moon May 8-22
Frost May 29-Jun 5
Frost May 22-29
Moon May 22-23
Jul 3
Sweet CornN/AN/AFrost Jul 3-17
Moon Jul 5-17
Jun 17
Sweet PotatoesN/AN/AFrost Jul 3-17
Moon Jul 3-4
May 20
Swiss ChardFrost May 8-22
Moon May 8-22
Frost Jun 5-19
Moon Jun 6-19
Frost May 29-Jun 19
Moon Jun 6-19
Jul 3
ThymeFrost Apr 10-24
Moon Apr 10-23
Frost Jun 26-Jul 3
N/AJun 10
TomatillosFrost May 8-22
Moon May 8-22
Frost Jul 3-17
Moon Jul 5-17
N/AJun 17
TomatoesFrost Apr 24-May 8
Moon May 7-8
Frost Jul 3-10
Moon Jul 5-10
N/AJun 3
TurnipsN/AN/AFrost May 22-29
Moon May 24-29
Aug 5
WatermelonsFrost May 29-Jun 12
Moon Jun 6-12
Frost Jul 3-10
Moon Jul 5-10
Frost Jun 26-Jul 3
Jun 3
Winter SquashFrost May 29-Jun 5
Frost Jun 26-Jul 10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
May 13
Zucchini (Summer Squash)Frost May 29-Jun 5
Frost Jun 26-Jul 10
Moon Jul 5-10
Frost Jul 3-10
Moon Jul 5-10
Jul 1

Planting Dates for Fall

On average, your first fall frost occurs on September 2 (at GRAND LAKE 6 SSW, CO climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Jul 15-Aug 19
Moon Jul 15-21, Aug 4-19
N/A40Frost-hardy
BeetsFrost Jun 10-Jul 8
Moon Jun 22-Jul 4
N/A50Frost-tolerant
Bok ChoyFrost Jun 24-Jul 15
Moon Jul 5-15
N/A50Frost-tolerant
BroccoliFrost Jun 3-10
Moon Jun 6-10
Frost Jun 24-Jul 8
Moon Jul 5-8
60Frost-tolerant
Brussels SproutsFrost May 13-27
Moon May 13-23
N/A100Frost-hardy
CabbageFrost Jun 3-10
Moon Jun 6-10
Frost Jun 24-Jul 1
90Frost-tolerant
CarrotsFrost Jun 17-24
Moon Jun 22-24
N/A70Frost-tolerant
CauliflowerFrost May 27-Jun 3
Frost Jun 10-17
Moon Jun 10-17
75Frost-tolerant
ChivesFrost Jun 10-Jul 8
Moon Jun 10-21, Jul 5-8
N/A70Frost-tolerant
FennelFrost Jun 3-17
Moon Jun 6-17
N/A80Tender
GarlicFrost Sep 16-30
Moon Sep 18-30
N/A120Frost-hardy
Green BeansFrost Jun 17-Jul 1
Moon Jun 17-21
N/A55Tender
KaleFrost Jun 24-Jul 8
Moon Jul 5-8
N/A60Frost-hardy
KohlrabiFrost Jul 1-22
Moon Jul 5-21
N/A45Frost-tolerant
LettuceFrost Jun 24-Jul 8
Moon Jul 5-8
N/A60Frost-tolerant
Mustard GreensFrost Jul 1-22
Moon Jul 5-21
N/A45Tender
PeasFrost Jun 24-Jul 8
Moon Jul 5-8
N/A55Tender
RadishesFrost Jul 22-Aug 5
Moon Jul 22-Aug 3
N/A25Frost-tolerant
SpinachFrost Jul 15-Aug 5
Moon Jul 15-21, Aug 4-5
N/A30Frost-hardy
Swiss ChardFrost Jun 24-Jul 8
Moon Jul 5-8
N/A60Frost-tolerant
TurnipsFrost Jul 1-15
Moon Jul 1-4
N/A50Frost-tolerant
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