Last Frost Date

Planting planner: Manchester, New Hampshire

Typical last spring frost April 21 (1 spring in 10 later than May 6). Typical first fall frost October 19 (1 fall in 10 earlier than October 4). Growing season about 180 days.

Or use your browser's Print command.

Frost likely Frost possible Frost unlikely Frost is likely until April 8 and fades out by May 6. It is unlikely from then until October 4, and likely again after November 4. The dashed lines are the typical dates, April 21 and October 19.

January

Nothing to start this month.

February

  • February 3 to March 3: Broccoli and cabbage (start seeds indoors)
  • February 17 to March 17: Cauliflower (start seeds indoors)

March

  • March 3 to 24: Eggplant (start seeds indoors)
  • March 10 to 24: Peppers (start seeds indoors)
  • March 17 to 31: Tomatoes (start seeds indoors)
  • March 24 to April 7: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • March 24 to April 7: Broccoli and cabbage (plant out)

April

  • April 7 to 21: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • April 7 to 21: Cauliflower (plant out)
  • April 21: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)

May

  • May 5: Tomatoes, peppers, eggplant (plant out)
  • May 5: Melons, winter squash, pumpkins, lima beans (sow outdoors)
  • May 24 to June 7: Cabbage for fall (start seeds)

June

  • June 13 to 27: Broccoli for fall (start seeds)

July

  • July 23: Snap beans for fall (last date to sow)
  • July 27: Carrots for fall (last date to sow)
  • July 28: Cucumbers for fall (last date to sow)

August

  • August 1: Peas for fall (last date to sow)
  • August 2: Summer squash for fall (last date to sow)
  • August 6: Leaf lettuce and beets for fall (last date to sow)
  • August 16: Turnips and kohlrabi for fall (last date to sow)
  • August 26: Spinach for fall (last date to sow)

September

  • September 5: Radishes for fall (last date to sow)

October

  • October 4: Tomatoes, peppers, squash, melons, cucumbers (watch the forecast)

November

  • November 8 to 15: Garlic (plant cloves)

December

Nothing to start this month.

Dates from NOAA's 1991 to 2020 climate normals for Manchester Airport (station USW00014710), 4 miles from the center of Manchester. Planting rules: Colorado State University Extension GardenNotes #720 (spring), Virginia Cooperative Extension 426-334 (fall crops), University of Minnesota Extension (garlic). Spring bulbs: plant when the soil has cooled to about 50 to 55°F, until a couple of weeks before the ground freezes (University of Wisconsin–Madison Extension). Full details: https://lastfrostdate.com/frost-dates/new-hampshire/manchester/

Back to frost dates for Manchester