Last Frost Date

Planting planner: Waterbury, Connecticut

Typical last spring frost April 26 (1 spring in 10 later than May 9). Typical first fall frost October 16 (1 fall in 10 earlier than October 4). Growing season about 175 days.

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Frost likely Frost possible Frost unlikely Frost is likely until April 11 and fades out by May 9. It is unlikely from then until October 4, and likely again after November 1. The dashed lines are the typical dates, April 26 and October 16.

January

Nothing to start this month.

February

  • February 8 to March 8: Broccoli and cabbage (start seeds indoors)
  • February 22 to March 22: Cauliflower (start seeds indoors)

March

  • March 8 to 29: Eggplant (start seeds indoors)
  • March 15 to 29: Peppers (start seeds indoors)
  • March 22 to April 5: Tomatoes (start seeds indoors)
  • March 29 to April 12: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • March 29 to April 12: Broccoli and cabbage (plant out)

April

  • April 12 to 26: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • April 12 to 26: Cauliflower (plant out)
  • April 26: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)

May

  • May 10: Tomatoes, peppers, eggplant (plant out)
  • May 10: Melons, winter squash, pumpkins, lima beans (sow outdoors)
  • May 21 to June 4: Cabbage for fall (start seeds)

June

  • June 10 to 24: Broccoli for fall (start seeds)

July

  • July 20: Snap beans for fall (last date to sow)
  • July 24: Carrots for fall (last date to sow)
  • July 25: Cucumbers for fall (last date to sow)
  • July 29: Peas for fall (last date to sow)
  • July 30: Summer squash for fall (last date to sow)

August

  • August 3: Leaf lettuce and beets for fall (last date to sow)
  • August 13: Turnips and kohlrabi for fall (last date to sow)
  • August 23: Spinach for fall (last date to sow)

September

  • September 2: Radishes for fall (last date to sow)

October

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

November

  • November 6 to 13: Garlic (plant cloves)

December

Nothing to start this month.

Dates from NOAA's 1991 to 2020 climate normals for Meriden Markham Municipal Airport (station USW00054788), 10 miles from the center of Waterbury. 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/connecticut/waterbury/

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