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Planting Calendar for Marlborough, NH | Almanac.com

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Planting Calendar for Marlborough, NH

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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.

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're 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 also 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.

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 can 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 tempertures, 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. 

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 Fall

On average, your first fall frost occurs on September 26 (at KEENE, NH climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Aug 8-Sep 12
Moon Aug 16-30
N/A40Frost-hardy
BeetsFrost Jul 4-Aug 1
Moon Jul 4-16
N/A50Frost-tolerant
Bok ChoyFrost Jul 18-Aug 8
Moon Jul 18-Aug 1
N/A50Frost-tolerant
BroccoliFrost Jun 27-Jul 4
Moon Jun 27-Jul 3
Frost Jul 18-Aug 1
Moon Jul 18-Aug 1
60Frost-tolerant
CabbageFrost Jun 27-Jul 4
Moon Jun 27-Jul 3
Frost Jul 18-25
Moon Jul 18-25
90Frost-tolerant
CarrotsFrost Jul 11-18
Moon Jul 11-16
N/A70Frost-tolerant
CauliflowerFrost Jun 20-27
Moon Jun 20-27
Frost Jul 4-11
75Frost-tolerant
ChivesFrost Jul 4-Aug 1
Moon Jul 17-Aug 1
N/A70Frost-tolerant
GarlicFrost Oct 10-24
Moon Oct 10-13
N/A120Frost-hardy
Green BeansFrost Jul 11-25
Moon Jul 17-25
N/A55Tender
KaleFrost Jul 18-Aug 1
Moon Jul 18-Aug 1
N/A60Frost-hardy
KohlrabiFrost Jul 25-Aug 15
Moon Jul 25-Aug 1
N/A45Frost-tolerant
LettuceFrost Jul 18-Aug 1
Moon Jul 18-Aug 1
N/A60Frost-tolerant
PeasFrost Jul 18-Aug 1
Moon Jul 18-Aug 1
N/A55Tender
RadishesFrost Aug 15-29
Moon Aug 15
N/A25Frost-tolerant
SpinachFrost Aug 8-29
Moon Aug 16-29
N/A30Frost-hardy
Swiss ChardFrost Jul 18-Aug 1
Moon Jul 18-Aug 1
N/A60Frost-tolerant
TurnipsFrost Jul 25-Aug 8
Moon Aug 2- 8
N/A50Frost-tolerant

Planting Dates for Spring

On average, your last spring frost occurs on May 19 (at KEENE, NH climate station, elevation 511 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 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 28-May 12
Moon Apr 28-May 5
Frost Apr 21-28
Moon Apr 21-28
Aug 29
AsparagusN/AN/AFrost May 5-19
Moon May 6-18
May 19
BasilFrost Apr 7-21
Moon Apr 19-21
Frost Jun 2-16
Moon Jun 2- 3
Frost Jun 2-16
Moon Jun 2- 3
Aug 15
BeetsN/AFrost May 5-19
Moon May 6-18
Frost Apr 21-28
Jun 2
Bell PeppersFrost Mar 9-24
Moon Mar 21-24
Frost Jun 2- 9
Moon Jun 2- 3
N/AJul 4
Bok ChoyFrost Apr 7-21
Moon Apr 19-21
Frost Jun 2- 9
Moon Jun 2- 3
Frost Jun 2- 9
Moon Jun 2- 3
Jun 30
BroccoliFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 5-19
Moon May 5
Frost Apr 21-28
Moon Apr 21-28
Jul 25
Brussels SproutsFrost Apr 7-21
Moon Apr 19-21
Frost Feb 9-23
Moon Feb 20-23
Frost Jan 12-26
Moon Jan 21-26
Jun 20
CabbageFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 5-19
Moon May 5
Frost Apr 21-28
Moon Apr 21-28
Jun 13
CantaloupesFrost Apr 28-May 12
Moon Apr 28-May 5
Frost May 19-Jun 2
Moon May 19-Jun 2
Frost May 26-Jun 2
Moon May 26-Jun 2
Jun 20
CarrotsN/AN/AFrost Apr 21-May 5
Jul 18
CauliflowerFrost Apr 7-21
Moon Apr 19-21
Frost May 12-26
Moon May 19-26
N/AJul 18
CeleryFrost Feb 23-Mar 9
Moon Feb 23-Mar 7
Frost May 26-Jun 9
Moon May 26-Jun 3
Frost May 19
Moon May 19
Jul 18
ChivesFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Apr 28-May 5
Moon Apr 28-May 5
Frost Apr 28-May 5
Moon Apr 28-May 5
Aug 1
Cilantro (Coriander)N/AN/AFrost May 19-Jun 2
Moon May 19-Jun 2
Jun 9
CollardsFrost Apr 7-21
Moon Apr 19-21
Frost May 5-19
Moon May 5
Frost Apr 28-May 5
Moon Apr 28-May 5
Jul 18
CornN/AN/AFrost Jun 2-16
Moon Jun 2- 3
Jul 11
CucumbersFrost Apr 28-May 5
Moon Apr 28-May 5
Frost May 26-Jun 9
Moon May 26-Jun 3
Frost Jun 2- 9
Moon Jun 2- 3
Jul 18
DillN/AN/AFrost May 12-Jun 2
Moon May 19-Jun 2
Aug 1
EggplantsFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Jun 2- 9
Moon Jun 2- 3
N/AJul 18
Fava Beans (Broad Beans)N/AN/AFrost Apr 21-28
Moon Apr 21-28
Jun 2
GarlicN/AN/AN/A
Green BeansN/AN/AFrost May 26-Jun 16
Moon May 26-Jun 3
Jul 18
Jalapeño PeppersFrost Mar 9-24
Moon Mar 21-24
Frost Jun 2- 9
Moon Jun 2- 3
N/A
KaleFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 5-19
Moon May 5
Frost Apr 21-28
Moon Apr 21-28
Jun 2
KohlrabiFrost Apr 7-21
Moon Apr 19-21
Frost Apr 28-May 5
Moon Apr 28-May 5
Frost Apr 21-28
Moon Apr 21-28
Jun 2
LettuceFrost Apr 7-21
Moon Apr 19-21
Frost Apr 28-May 5
Moon Apr 28-May 5
Frost Apr 21-28
Moon Apr 21-28
Jun 2
OkraFrost Apr 21-May 5
Moon Apr 21-May 5
Frost Jun 2- 9
Moon Jun 2- 3
Frost Jun 2-16
Moon Jun 2- 3
Jul 18
Onion SetsN/AFrost Apr 21-May 5
N/AJun 20
OreganoFrost Mar 9-Apr 7
Moon Mar 21-Apr 5
Frost May 26-Jun 9
Moon May 26-Jun 3
N/AJul 18
ParsleyFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 9
Moon May 26-Jun 3
Frost Apr 21-May 26
Moon Apr 21-May 5, May 19-26
Jul 11
ParsnipsN/AN/AFrost Apr 21-28
Jun 20
PeasN/AN/AFrost Apr 21-28
Moon Apr 21-28
Jun 2
PotatoesN/AN/AFrost Apr 21-May 5
Jul 18
PumpkinsFrost Apr 28-May 12
Moon Apr 28-May 5
Frost Jun 2- 9
Moon Jun 2- 3
Frost Jun 2- 9
Moon Jun 2- 3
Jun 13
RadishesN/AN/AFrost Apr 21-28
Aug 1
RosemaryFrost Feb 23-Mar 9
Moon Feb 23-Mar 7
Frost Jun 2- 9
Moon Jun 2- 3
N/AAug 1
SageFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost May 26-Jun 9
Moon May 26-Jun 3
N/AJul 11
SpinachFrost Apr 7-21
Moon Apr 19-21
Frost Apr 28-May 5
Moon Apr 28-May 5
Frost Apr 21-28
Moon Apr 21-28
Jun 2
Sweet PotatoesN/AN/AFrost Jun 2-16
Moon Jun 4-16
Jun 13
Swiss ChardFrost Apr 7-21
Moon Apr 19-21
Frost May 5-19
Moon May 5
Frost Apr 28-May 19
Moon Apr 28-May 5, May 19
Jun 2
ThymeFrost Mar 9-24
Moon Mar 21-24
Frost May 26-Jun 2
Moon May 26-Jun 2
N/AJul 4
TomatillosFrost Apr 7-21
Moon Apr 19-21
Frost Jun 2-16
Moon Jun 2- 3
N/AJul 11
TomatoesFrost Mar 24-Apr 7
Moon Mar 24-Apr 5
Frost Jun 2- 9
Moon Jun 2- 3
N/AJun 27
TurnipsN/AN/AFrost Apr 21-28
Aug 29
WatermelonsFrost Apr 28-May 12
Moon Apr 28-May 5
Frost Jun 2- 9
Moon Jun 2- 3
Frost May 26-Jun 2
Moon May 26-Jun 2
Jun 27
Winter SquashFrost Apr 28-May 5
Moon Apr 28-May 5
Frost May 26-Jun 9
Moon May 26-Jun 3
Frost Jun 2- 9
Moon Jun 2- 3
Jun 6
Zucchini and Summer SquashFrost Apr 28-May 5
Moon Apr 28-May 5
Frost May 26-Jun 9
Moon May 26-Jun 3
Frost Jun 2- 9
Moon Jun 2- 3
Jul 25
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