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Regional Calendars, Climate & DataCrop Calendar for the High Plains
On the High Plains, winter wheat, corn, sorghum and other crops share a short list of risks: late spring freezes, hail, wind and limited water. Timing is about balancing them.
Key points
- High Plains calendars combine fall wheat seeding with spring row crop planting, each with its own risks.
- Winter wheat seeding date affects yield, so use your state extension guide.
- For corn and soybeans, use soil temperature at seed depth and confirm insurance dates.
- Dryland and irrigated systems need separate calendars.
- Keep yearly records of seeding date, moisture and weather so you can adjust your calendar.
What does the High Plains calendar look like?
Winter wheat is seeded in the fall and harvested the following summer, while corn, sorghum and soybeans are planted in spring. The region covers wide differences in rainfall and temperature from north to south and east to west, so planting dates vary a lot.
Kansas State Extension publishes a Kansas Crop Planting Guide, and Nebraska CropWatch covers Nebraska, so look for the guide that fits your state.
Wind is a constant on the plains. It dries soil, speeds crop water use and can damage young plants, so residue management and field layout deserve as much attention as dates.
How does winter wheat seeding date matter?
University of Nebraska-Lincoln CropWatch and K-State both publish articles showing that winter wheat seeding date affects yield, with seeding too early or too late each carrying costs. Very early seeding can lead to excess fall growth and pest and disease pressure, while late seeding means less tillering before winter. Check your state extension wheat seeding guidance for the range for your area.
Soil moisture at seeding also matters, since seed needs enough moisture to establish before winter.
Seeding date, variety and fall growth interact with soil moisture, so a wet September and a dry September can call for different choices in the same field.
- Check your state wheat seeding guide
- Watch soil moisture and soil temperature at seeding
- Plan for delays and know your late-seeding options
When should you plant spring crops?
University of Nebraska-Lincoln CropWatch cites an average soil temperature near 50 degrees F as the point where germination is expected to be reliable for corn and soybeans, and recommends sensors at seed depth with several consecutive days above that level. It also notes that crop insurance replant eligibility dates limit how early you can plant, and that slow emergence is expected in cool conditions.
Use soil temperature, forecast and insurance dates together, and check with the USDA Risk Management Agency and your agent. Check state guidance for planting dates that fit your county, since the range across the plains is wide.
How do freeze and hail risk affect planning?
Kansas State Extension has written about how likely a late spring freeze is in Kansas, and Nebraska CropWatch provides dates and probabilities for the last spring freeze across Nebraska. Use these to choose a risk level for each crop, and remember a freeze after a warm spell can hit crops that have started growing, including wheat that has jointed or headed.
Hail and wind cannot be scheduled around, so consider crop insurance as a concept and talk with an agent about coverage that fits your operation.
Late spring freezes can injure wheat at jointing or heading, so scout fields after any hard freeze and ask extension how to judge damage before making decisions.
How does water limit the calendar?
Dryland and irrigated systems have different calendars. Dryland production depends on stored soil moisture and timely rain, and planting dates, crop choice and residue management all affect moisture. Irrigated fields can plant earlier, but water allocations and well rules vary by area, so confirm local rules.
Track soil moisture, rain and crop stage, and keep records so you can see which decisions paid off in dry years.
Stubble and residue can help hold snow and soil moisture in dryland systems, and ask extension about residue practices that suit your crop rotation.
How do you build your High Plains calendar?
Start with your wheat seeding window and spring planting windows, then add frost risk dates, soil temperature checks, insurance dates and water timing. Mark the months when field work usually stalls from wind, wet soil or heat.
Review it every season with your adviser and compare it with the state planting guide. Compare your own notes with your extension guide each winter and adjust one factor at a time.
What should you record each year?
Write down your wheat seeding date, fall moisture, spring planting dates, soil temperature at planting, freeze events and harvest dates. Add rainfall by month from your own gauge, and note any hail, wind or drought damage.
Review the notes each winter. In a region where one bad weather event can change the season, a clear record of what you did and what happened is the best guide for adjusting the next year's calendar.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.