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Sweet corn planting and harvest datesSweet corn Planting Dates in Central and higher-elevation Eastern Oregon
Usual sweet corn planting periods in Central and higher-elevation Eastern Oregon, 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 | Late May (direct seed) | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Planting | Planting window in May |
What these dates mean in Central and higher-elevation Eastern Oregon
Planting usually runs about 31 days, from May 1 to May 31.
That start date is close to the middle of the 3 places in this data set that report sweet corn planting dates (May 1).
Frost-date caveat: these are published ranges for Central and higher-elevation Eastern Oregon. A northern or high-elevation site will run later than a southern or low one, and a cold wet spring can push planting past the window. Monthly advice is not applicable to all areas of Oregon; frost dates and local conditions vary. Check your last spring frost and soil temperature, and confirm with your county extension office.
Sweet corn dates in other places
- Central Missouri
- Columbia and Snake River valleys, Oregon
- Minnesota
- North Missouri
- Oregon Coast
- South Missouri
Other crops in Central and higher-elevation Eastern Oregon
- Brussels sprouts
- Carrots
- Cauliflower
- Chard
- Cucumbers
- Kohlrabi
- Leeks
- Lettuce
- Peas
- Peppers
- Potatoes
- Radishes
- Spinach
- Turnips
Last reviewed: November 2026. Source: OSU Extension late may (direct seed) garden calendar.