Home / Planting dates / Corn / Idaho
Corn planting and harvest datesCorn Planting Dates in Idaho
Usual corn planting and harvest periods in Idaho, 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 | Apr 21 to Jun 9 usual (most active May 5 to May 26) | source | 2026-11-11 |
| Harvest | Sep 29 to Nov 24 usual (most active Oct 20 to Nov 10) | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Planting | Planting window in April | Planting window, most active in May | Planting window in June | |||||||||
| Harvest | Harvest window in September | Harvest window, most active in October | Harvest window, most active in November |
What these dates mean in Idaho
Planting usually runs about 50 days, from Apr 21 to Jun 9.
That start date is about 7 days later than the middle of the 41 places in this data set that report corn planting dates (Apr 14).
Harvest usually runs about 57 days, from Sep 29 to Nov 24.
From the start of the planting window to the start of the harvest window is about 161 days in Idaho, a rough guide to how long the crop occupies the bed or field.
Related guides
- Corn (Sweet) Planting Calendar by Zone
- Corn Planting Calendar: Grain vs. Silage
- Corn Growth Stages and Calendar Timing
- Field Crop Planting Calendar for the Corn Belt
Corn dates in other places
- Alabama
- Arizona
- Arkansas
- California
- Colorado
- Delaware
- Florida
- Georgia
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maryland
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Other crops in Idaho
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.