When to plant sweet corn in Minnesota
Minnesota spans USDA zones 3b–5a, so the right time to plant sweet corn shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 21 in Winona to June 5 in Hibbing — below are local dates for 102 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Minneapolis | 5a | April 23 | October 16 | April 23 – May 7 |
| St. Paul | 5a | April 24 | October 16 | April 24 – May 8 |
| Rochester | 4b | April 30 | October 6 | April 30 – May 14 |
| Bloomington | 5a | April 23 | October 18 | April 23 – May 7 |
| Duluth | 4b | May 14 | October 12 | May 14 – May 28 |
| Brooklyn Park | 5a | April 30 | October 8 | April 30 – May 14 |
| Plymouth | 5a | April 29 | October 12 | April 29 – May 13 |
| Woodbury | 5a | April 26 | October 12 | April 26 – May 10 |
Sweet Corn in Minnesota: FAQ
When can I plant sweet corn in Minnesota?
Across Minnesota, the time to direct-sow sweet corn spans roughly April 21 in Winona to June 5 in Hibbing, each following that city's local frost dates.
Does the sweet corn planting date vary across Minnesota?
Yes. Minnesota publishes 102 cities with their own frost dates, so the right sweet corn planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does sweet corn take to grow in Minnesota?
Sweet Corn takes about 60–90 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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