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Place calendarCrop Planting Dates in Idaho
Published planting and harvest windows for 7 crops in Idaho, in one calendar. Ranges only, with sources.
| Crop | Planting | Harvest |
|---|---|---|
| Alfalfa hay | May 22 to Oct 20 | |
| Corn | Planting: Apr 21 to Jun 9 | Sep 29 to Nov 24 |
| Durum wheat | Planting: Apr 1 to May 30 | Aug 8 to Sep 29 |
| Spring barley | Planting: Mar 24 to May 26 | Jul 28 to Sep 29 |
| Spring oats | Planting: Mar 31 to Jun 2 | Jul 21 to Sep 29 |
| Spring wheat | Planting: Mar 21 to May 26 | Aug 4 to Sep 29 |
| Winter wheat | Planting: Sep 8 to Nov 3 | Jul 23 to Sep 14 |
Calendar view
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alfalfa hay harvest | Harvest window in May | Harvest window in June | Harvest window in July | Harvest window in August | Harvest window in September | Harvest window in October | ||||||
| Corn planting | Planting window in April | Planting window, most active in May | Planting window in June | |||||||||
| Corn harvest | Harvest window in September | Harvest window, most active in October | Harvest window, most active in November | |||||||||
| Durum wheat planting | Planting window, most active in April | Planting window, most active in May | ||||||||||
| Durum wheat harvest | Harvest window, most active in August | Harvest window, most active in September | ||||||||||
| Spring barley planting | Planting window in March | Planting window, most active in April | Planting window, most active in May | |||||||||
| Spring barley harvest | Harvest window in July | Harvest window, most active in August | Harvest window, most active in September | |||||||||
| Spring oats planting | Planting window in March | Planting window, most active in April | Planting window, most active in May | Planting window in June | ||||||||
| Spring oats harvest | Harvest window in July | Harvest window, most active in August | Harvest window, most active in September | |||||||||
| Spring wheat planting | Planting window in March | Planting window, most active in April | Planting window, most active in May | |||||||||
| Spring wheat harvest | Harvest window, most active in August | Harvest window, most active in September | ||||||||||
| Winter wheat planting | Planting window, most active in September | Planting window, most active in October | Planting window in November | |||||||||
| Winter wheat harvest | Harvest window in July | Harvest window, most active in August | Harvest window in September |
Frost-date caveat: published dates are averages. Find your own last and first frost dates and compare them with these ranges before you plant.
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.