Bield:Farm
State agricultural overview

Wyoming crop calendar.

Zone 4bRange 3a to 6a115-day seasonLast frost May 25First frost September 15

13 primary crops with planting windows for Wyoming. Calendar timing is anchored to 4b dominant hardiness zone and a 115-day growing season — verify against University of Wyoming Extension for variety- and county-specific guidance.

Row Crop · Wyoming

Vegetables · Wyoming

  • Cucumbers
    primary
    Spring: June 8 – July 13
  • Peppers
    primary
    Spring: June 15 – July 6
  • Potatoes
    primary
    Spring: May 11 – June 1
    Fall: July 2 – July 17
  • Pumpkins
    primary
    Spring: June 15 – July 13
  • Sweet Corn
    primary
    Spring: May 25 – June 29
  • Tomatoes
    primary
    Spring: June 8 – June 29

Forages · Wyoming

  • Alfalfa
    primary
    Spring: May 18 – June 15
    Fall: July 17 – August 1
  • Clover
    primary
    Spring: May 4 – June 1
    Fall: July 17 – August 1

Cover Crops · Wyoming

  • Brassicas
    primary
    Fall: July 2 – July 17
  • Buckwheat
    primary
    Spring: July 20 – August 17
  • Cereal Oats
    primary
    Spring: May 18 – June 15
    Fall: July 17 – August 1
  • Winter Rye
    primary
    Fall: September 8 – September 29

Frost-date reference — Wyoming

Last frost (spring)
May 25
First frost (fall)
September 15
Growing season
115 days
Hardiness zone
4b

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

Wyoming 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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