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Berlin, NH Planting Calendar

The last spring frost in Berlin usually comes around May 16 and the first fall frost around Sep 29, a growing season of about 136 days. Start tomatoes indoors Apr 4 – Apr 18 and plant them outside May 30 – Jun 13.

Last spring frostMay 16
First fall frostSep 29
Growing season136 days

When to plant vegetables in Berlin

VegetableStart seeds indoorsPlant outsideFall crop
TomatoesApr 4 – Apr 18May 30 – Jun 13—
PeppersMar 28 – Apr 11Jun 6 – Jun 20—
EggplantMar 28 – Apr 11Jun 6 – Jun 20—
Cucumbers—May 30 – Jun 13—
Zucchini & summer squash—May 30 – Jun 13—
Pumpkins & winter squash—Jun 6 – Jun 20—
Green beans—May 30 – Jun 13Jul 7 – Jul 21
Sweet corn—May 30 – Jun 13—
BasilApr 18 – May 2May 30 – Jun 13—
LettuceMar 21 – Apr 4Apr 18 – May 30Aug 4 – Aug 18
Spinach—Apr 4 – Apr 25Aug 4 – Aug 18
Peas—Apr 4 – Apr 25Jul 21 – Aug 4
Carrots—Apr 18 – May 23Jul 7 – Jul 21
Radishes—Apr 11 – May 30Aug 18 – Sep 1
BroccoliMar 7 – Mar 21Apr 18 – May 2Jul 7 – Jul 21
KaleMar 21 – Apr 4Apr 11 – Apr 25Jul 21 – Aug 4
Onions—Apr 18 – May 2—
Potatoes—Apr 25 – May 23—
Garlic——Sep 15 – Oct 20

Dates count from the median frost dates (2016–2025) for Berlin. In a cold spring, wait a week; in a warm one you can go a week early.

Month-by-month planting in Berlin

  1. JanuaryPlan, order seeds and prepare beds.
  2. FebruaryPlan, order seeds and prepare beds.
  3. MarchStart indoors: Peppers, Eggplant, Lettuce, Broccoli, Kale
  4. AprilStart indoors: Tomatoes, Peppers, Eggplant, Basil, Lettuce, KalePlant outside: Lettuce, Spinach, Peas, Carrots, Radishes, Broccoli, Kale, Onions, Potatoes
  5. MayStart indoors: BasilPlant outside: Tomatoes, Cucumbers, Zucchini & summer squash, Green beans, Sweet corn, Basil, Lettuce, Carrots, Radishes, Broccoli, Onions, Potatoes
  6. JunePlant outside: Tomatoes, Peppers, Eggplant, Cucumbers, Zucchini & summer squash, Pumpkins & winter squash, Green beans, Sweet corn, Basil
  7. JulyPlant outside: Green beans, Peas, Carrots, Broccoli, Kale
  8. AugustPlant outside: Lettuce, Spinach, Peas, Radishes, Kale
  9. SeptemberPlant outside: Radishes, Garlic
  10. OctoberPlant outside: Garlic
  11. NovemberPlan, order seeds and prepare beds.
  12. DecemberPlan, order seeds and prepare beds.

Tools for this season

Seed starting kitTrays with humidity domes for starting seeds indoors.See options on AmazonLED grow lightKeeps indoor seedlings short and sturdy.See options on AmazonFrost clothCovers tender plants on a surprise frost night.See options on AmazonSoil thermometerCheck the soil at 4 inches before you spread anything.See options on Amazon

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Frequently asked questions

When is the last frost in Berlin?

The median last spring frost is May 16 and the median first fall frost is Sep 29, based on 2016–2025 weather data.

When should I plant tomatoes in Berlin?

Start seeds indoors Apr 4 – Apr 18 and set plants outside May 30 – Jun 13, once nights stay above 50°F.

When should I plant a fall garden in Berlin?

Sow or transplant cool-season crops 6 to 12 weeks before the first fall frost (around Sep 29): broccoli and carrots first, lettuce, spinach and radishes last.

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