Zone 10a planting calendar

What to plant in September — zone 10a

Zone 10a averages its last spring frost around January 30 and its first fall frost around December 25. Everything below is timed from those two dates, so it stays useful whether you're planting for summer or for a fall harvest.

Last frost: January 30
First frost: December 25
Winter lows: 30 to 35 °F

Start indoors for fall

  • Kalearound Sep 16

    Fall kale window opens — sow trays any time in the next four weeks.

  • Broccoliaround Sep 27

    Seedlings need 5 weeks before they go out for a fall harvest.

Direct sow for fall

  • Parsleyaround Sep 18

    Fall parsley window opens — sowing now beats the last-minute date by a month of growth.

  • Bush beanaround Sep 23

    Fall bush bean window opens — sowing now beats the last-minute date by a month of growth.

  • Lettucearound Sep 24

    Succession sowing 3 of 3 — sow every 21 days for a steady cut.

  • Peaaround Sep 28

    Fall pea window opens — sowing now beats the last-minute date by a month of growth.

  • Cilantroaround Sep 29

    Succession sowing 3 of 3 — sow every 21 days for a steady cut.

  • Carrotaround Sep 29

    Fall carrot window opens — sowing now beats the last-minute date by a month of growth.

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