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Place calendarCrop Planting Dates in Montana
Published planting and harvest windows for 7 crops in Montana, in one calendar. Ranges only, with sources.
| Crop | Planting | Harvest |
|---|---|---|
| Alfalfa hay | Jun 18 to Sep 23 | |
| Corn | Planting: Apr 26 to Jun 4 | Oct 4 to Dec 8 |
| Durum wheat | Planting: Apr 25 to Jun 15 | Aug 11 to Oct 4 |
| Spring barley | Planting: Apr 3 to May 20 | Jul 27 to Sep 10 |
| Spring oats | Planting: Apr 18 to Jun 5 | Aug 8 to Sep 22 |
| Spring wheat | Planting: Apr 6 to May 18 | Jul 30 to Sep 13 |
| Winter wheat | Planting: Sep 6 to Oct 16 | Jul 22 to Aug 17 |
Calendar view
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alfalfa hay harvest | Harvest window in June | Harvest window in July | Harvest window in August | Harvest window in September | ||||||||
| Corn planting | Planting window in April | Planting window, most active in May | Planting window in June | |||||||||
| Corn harvest | Harvest window, most active in October | Harvest window, most active in November | Harvest window, most active in December | |||||||||
| Durum wheat planting | Planting window in April | Planting window, most active in May | Planting window, most active in June | |||||||||
| Durum wheat harvest | Harvest window, most active in August | Harvest window, most active in September | Harvest window in October | |||||||||
| Spring barley planting | 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, most active in April | Planting window, most active in May | Planting window in June | |||||||||
| Spring oats harvest | Harvest window, most active in August | Harvest window, most active in September | ||||||||||
| Spring wheat planting | Planting window, most active in April | Planting window, most active in May | ||||||||||
| Spring wheat harvest | Harvest window in July | 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 | ||||||||||
| Winter wheat harvest | Harvest window, most active in July | Harvest window, most active in August |
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.