Last Frost Date

Planting planner: Palmdale, California

Typical last spring frost March 18 (1 spring in 10 later than April 11). Typical first fall frost November 15 (1 fall in 10 earlier than October 30). Growing season about 241 days.

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Frost likely Frost possible Frost unlikely Frost is likely until February 19 and fades out by April 11. It is unlikely from then until October 30, and likely again after November 30. The dashed lines are the typical dates, March 18 and November 15.

January

  • January 14 to February 11: Cauliflower (start seeds indoors)
  • January 28 to February 18: Eggplant (start seeds indoors)

February

  • February 4 to 18: Peppers (start seeds indoors)
  • February 11 to 25: Tomatoes (start seeds indoors)
  • February 18 to March 4: Peas, spinach, lettuce, radishes, onion sets, turnips (sow outdoors)
  • February 18 to March 4: Broccoli and cabbage (plant out)

March

  • March 4 to 18: Beets, carrots, potatoes, Swiss chard (plant outdoors)
  • March 4 to 18: Cauliflower (plant out)
  • March 18: Snap beans, sweet corn, cucumbers, summer squash (sow outdoors)

April

  • April 1: Tomatoes, peppers, eggplant (plant out)
  • April 1: Melons, winter squash, pumpkins, lima beans (sow outdoors)

May

Nothing to start this month.

June

  • June 20 to July 4: Cabbage for fall (start seeds)

July

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

August

  • August 19: Snap beans for fall (last date to sow)
  • August 23: Carrots for fall (last date to sow)
  • August 24: Cucumbers for fall (last date to sow)
  • August 28: Peas for fall (last date to sow)
  • August 29: Summer squash for fall (last date to sow)

September

  • September 2: Leaf lettuce and beets for fall (last date to sow)
  • September 12: Turnips and kohlrabi for fall (last date to sow)
  • September 22: Spinach for fall (last date to sow)

October

  • October 2: Radishes for fall (last date to sow)
  • October 30: Tomatoes, peppers, squash, melons, cucumbers (watch the forecast)

November

Nothing to start this month.

December

  • December 4 to 11: Garlic (plant cloves)
  • December 31 to January 28: Broccoli and cabbage (start seeds indoors)

Dates from NOAA's 1991 to 2020 climate normals for Palmdale Airport (station USW00023182), 3 miles from the center of Palmdale. 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/california/palmdale/

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