Last Frost Date

Planting planner: Vancouver, Washington

Typical last spring frost March 29 (1 spring in 10 later than April 18). Typical first fall frost November 9 (1 fall in 10 earlier than October 22). Growing season about 223 days.

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Frost likely Frost possible Frost unlikely Frost is likely until March 6 and fades out by April 18. It is unlikely from then until October 22, and likely again after November 30. The dashed lines are the typical dates, March 29 and November 9.

January

  • January 11 to February 8: Broccoli and cabbage (start seeds indoors)
  • January 25 to February 22: Cauliflower (start seeds indoors)

February

  • February 8 to March 1: Eggplant (start seeds indoors)
  • February 15 to March 1: Peppers (start seeds indoors)
  • February 22 to March 8: Tomatoes (start seeds indoors)

March

  • March 1 to 15: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • March 1 to 15: Broccoli and cabbage (plant out)
  • March 15 to 29: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • March 15 to 29: Cauliflower (plant out)
  • March 29: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)

April

  • April 12: Tomatoes, peppers, eggplant (plant out)
  • April 12: Melons, winter squash, pumpkins, lima beans (sow outdoors)

May

Nothing to start this month.

June

  • June 14 to 28: Cabbage for fall (start seeds)

July

  • July 4 to 18: Broccoli for fall (start seeds)

August

  • August 13: Snap beans for fall (last date to sow)
  • August 17: Carrots for fall (last date to sow)
  • August 18: Cucumbers for fall (last date to sow)
  • August 22: Peas for fall (last date to sow)
  • August 23: Summer squash for fall (last date to sow)
  • August 27: Leaf lettuce and beets for fall (last date to sow)

September

  • September 6: Turnips and kohlrabi for fall (last date to sow)
  • September 16: Spinach for fall (last date to sow)
  • September 26: Radishes for fall (last date to sow)

October

  • October 22: Tomatoes, peppers, squash, melons, cucumbers (watch the forecast)

November

Nothing to start this month.

December

  • December 3 to 10: Garlic (plant cloves)

Dates from NOAA's 1991 to 2020 climate normals for Vancouver Pearson Airport (station USW00094298), 3 miles from the center of Vancouver. 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/washington/vancouver/

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