Bield:Farm
State agricultural overview

California crop calendar.

Zone 9aRange 5b to 11a270-day seasonLast frost March 1First frost November 30

8 primary crops with planting windows for California. Calendar timing is anchored to 9a dominant hardiness zone and a 270-day growing season — verify against University of California Cooperative Extension for variety- and county-specific guidance.

Row Crop · California

  • Cotton
    primary
    Spring: March 15 – April 5
  • Grain Sorghum
    primary
    Spring: March 22 – April 19
  • Corn
    secondary
    Spring: March 1 – March 22
  • Soybeans
    secondary
    Spring: March 15 – April 5
  • Winter Wheat
    secondary
    Fall: November 23 – December 14
  • Sunflowers
    limited
    Spring: March 8 – April 5

Vegetables · California

  • Cucumbers
    primary
    Spring: March 15 – April 19
  • Peppers
    primary
    Spring: March 22 – April 12
  • Pumpkins
    primary
    Spring: March 22 – April 19
  • Sweet Corn
    primary
    Spring: March 1 – April 5
  • Tomatoes
    primary
    Spring: March 15 – April 5
  • Potatoes
    secondary
    Spring: February 16 – March 8
    Fall: September 16 – October 1

Forages · California

  • Clover
    primary
    Spring: February 9 – March 8
    Fall: October 1 – October 16
  • Alfalfa
    limited
    Spring: February 23 – March 22
    Fall: October 1 – October 16

Cover Crops · California

  • Brassicas
    secondary
    Fall: September 16 – October 1
  • Cereal Oats
    secondary
    Spring: February 23 – March 22
    Fall: October 1 – October 16
  • Winter Rye
    secondary
    Fall: November 23 – December 14
  • Buckwheat
    limited
    Spring: April 26 – May 24

Frost-date reference — California

Last frost (spring)
March 1
First frost (fall)
November 30
Growing season
270 days
Hardiness zone
9a

Frost dates are NOAA / NCDC climate normals — county-level variation can shift these by 2–4 weeks. The California extension service publishes county-specific frost data: University of California Cooperative Extension.

California soil-temp alerts.

Bield: Farm ties weather and soil-temperature stations in your county to crop planting thresholds — get notified the day soil temp clears the threshold for your target.

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