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Spring oats planting and harvest datesSpring oats Planting Dates in Iowa
Usual spring oats planting and harvest periods in Iowa, shown as ranges with their source. Use them to frame a plan, then adjust for your own frost dates and soil temperature.
| Activity | Window | Source | Last verified |
|---|---|---|---|
| Planting | Mar 25 to May 13 usual (most active Apr 2 to May 2) | source | 2026-11-11 |
| Harvest | Jul 9 to Aug 11 usual (most active Jul 17 to Aug 5) | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Planting | Planting window in March | Planting window, most active in April | Planting window, most active in May | |||||||||
| Harvest | Harvest window, most active in July | Harvest window, most active in August |
What these dates mean in Iowa
Planting usually runs about 50 days, from Mar 25 to May 13.
That start date is about 6 days earlier than the middle of the 24 places in this data set that report spring oats planting dates (Mar 31).
Harvest usually runs about 34 days, from Jul 9 to Aug 11.
From the start of the planting window to the start of the harvest window is about 106 days in Iowa, a rough guide to how long the crop occupies the bed or field.
Related guides
Spring oats dates in other places
- Alaska
- California
- Colorado
- Idaho
- Illinois
- Indiana
- Kansas
- Maine
- Michigan
- Minnesota
- Missouri
- Montana
- Nebraska
- New York
- North Dakota
- Ohio
- Oklahoma
- Pennsylvania
- South Dakota
- Utah
- Washington
- Wisconsin
- Wyoming
Other crops in Iowa
Last reviewed: November 2026. Source: USDA NASS, Field Crops Usual Planting and Harvesting Dates (October 2010 edition, copy hosted by Cornell University Mann Library). Dates are the usual start and end of the period when about 5% to 95% of the crop is planted or harvested, from long-run state progress data. They are historic averages, not a forecast.