Last Frost Date

Planting planner: Salt Lake City, Utah

Typical last spring frost April 8 (1 spring in 10 later than April 30). Typical first fall frost October 31 (1 fall in 10 earlier than October 17). Growing season about 204 days.

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Frost likely Frost possible Frost unlikely Frost is likely until March 17 and fades out by April 30. It is unlikely from then until October 17, and likely again after November 13. The dashed lines are the typical dates, April 8 and October 31.

January

  • January 21 to February 18: Broccoli and cabbage (start seeds indoors)

February

  • February 4 to March 4: Cauliflower (start seeds indoors)
  • February 18 to March 11: Eggplant (start seeds indoors)
  • February 25 to March 11: Peppers (start seeds indoors)

March

  • March 4 to 18: Tomatoes (start seeds indoors)
  • March 11 to 25: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • March 11 to 25: Broccoli and cabbage (plant out)
  • March 25 to April 8: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • March 25 to April 8: Cauliflower (plant out)

April

  • April 8: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)
  • April 22: Tomatoes, peppers, eggplant (plant out)
  • April 22: Melons, winter squash, pumpkins, lima beans (sow outdoors)

May

Nothing to start this month.

June

  • June 5 to 19: Cabbage for fall (start seeds)
  • June 25 to July 9: Broccoli for fall (start seeds)

July

Nothing to start this month.

August

  • August 4: Snap beans for fall (last date to sow)
  • August 8: Carrots for fall (last date to sow)
  • August 9: Cucumbers for fall (last date to sow)
  • August 13: Peas for fall (last date to sow)
  • August 14: Summer squash for fall (last date to sow)
  • August 18: Leaf lettuce and beets for fall (last date to sow)
  • August 28: Turnips and kohlrabi for fall (last date to sow)

September

  • September 7: Spinach for fall (last date to sow)
  • September 17: Radishes for fall (last date to sow)

October

  • October 17: Tomatoes, peppers, squash, melons, cucumbers (watch the forecast)

November

  • November 17 to 24: Garlic (plant cloves)

December

Nothing to start this month.

Dates from NOAA's 1991 to 2020 climate normals for Salt Lake City International Airport (station USW00024127), 2 miles from the center of Salt Lake City. 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/utah/salt-lake-city/

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