State agricultural overview
Missouri crop calendar.
Zone 6bRange 5b to 7a185-day seasonLast frost April 20First frost October 20
17 primary crops with planting windows for Missouri. Calendar timing is anchored to 6b dominant hardiness zone and a 185-day growing season — verify against University of Missouri Extension for variety- and county-specific guidance.
Row Crop · Missouri
- CornprimarySpring: April 20 – May 11
- Grain SorghumprimarySpring: May 11 – June 8
- SoybeansprimarySpring: May 4 – May 25
- SunflowersprimarySpring: April 27 – May 25
- Winter WheatprimaryFall: October 13 – November 3
- CottonlimitedSpring: May 4 – May 25
Cover Crops · Missouri
- BrassicasprimaryFall: August 6 – August 21
- BuckwheatprimarySpring: June 15 – July 13
- Cereal OatsprimarySpring: April 13 – May 11Fall: August 21 – September 5
- Winter RyeprimaryFall: October 13 – November 3
Frost-date reference — Missouri
Last frost (spring)
April 20
First frost (fall)
October 20
Growing season
185 days
Hardiness zone
6b
Frost dates are NOAA / NCDC climate normals — county-level variation can shift these by 2–4 weeks. The Missouri extension service publishes county-specific frost data: University of Missouri Extension.
Missouri 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.