Last Frost Date

Planting planner: Topeka, Kansas

Typical last spring frost April 12 (1 spring in 10 later than April 27). Typical first fall frost October 23 (1 fall in 10 earlier than October 8). Growing season about 191 days.

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Frost likely Frost possible Frost unlikely Frost is likely until March 29 and fades out by April 27. It is unlikely from then until October 8, and likely again after November 4. The dashed lines are the typical dates, April 12 and October 23.

January

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

February

  • February 8 to March 8: Cauliflower (start seeds indoors)
  • February 22 to March 15: Eggplant (start seeds indoors)

March

  • March 1 to 15: Peppers (start seeds indoors)
  • March 8 to 22: Tomatoes (start seeds indoors)
  • March 15 to 29: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • March 15 to 29: Broccoli and cabbage (plant out)
  • March 29 to April 12: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • March 29 to April 12: Cauliflower (plant out)

April

  • April 12: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)
  • April 26: Tomatoes, peppers, eggplant (plant out)
  • April 26: Melons, winter squash, pumpkins, lima beans (sow outdoors)

May

  • May 28 to June 11: Cabbage for fall (start seeds)

June

  • June 17 to July 1: Broccoli for fall (start seeds)

July

  • July 27: Snap beans for fall (last date to sow)
  • July 31: Carrots for fall (last date to sow)

August

  • August 1: Cucumbers for fall (last date to sow)
  • August 5: Peas for fall (last date to sow)
  • August 6: Summer squash for fall (last date to sow)
  • August 10: Leaf lettuce and beets for fall (last date to sow)
  • August 20: Turnips and kohlrabi for fall (last date to sow)
  • August 30: Spinach for fall (last date to sow)

September

  • September 9: Radishes for fall (last date to sow)

October

  • October 8: 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 Topeka Municipal Airport (station USW00013996), 5 miles from the center of Topeka. 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/kansas/topeka/

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