When to plant spinach in Minnesota
Minnesota spans USDA zones 3b–5a, so the right time to plant spinach shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 10 in Winona to April 24 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 | March 12 – April 9 |
| St. Paul | 5a | April 24 | October 16 | March 13 – April 10 |
| Rochester | 4b | April 30 | October 6 | March 19 – April 16 |
| Bloomington | 5a | April 23 | October 18 | March 12 – April 9 |
| Duluth | 4b | May 14 | October 12 | April 2 – April 30 |
| Brooklyn Park | 5a | April 30 | October 8 | March 19 – April 16 |
| Plymouth | 5a | April 29 | October 12 | March 18 – April 15 |
| Woodbury | 5a | April 26 | October 12 | March 15 – April 12 |
Spinach in Minnesota: FAQ
When can I plant spinach in Minnesota?
Across Minnesota, the time to direct-sow spinach spans roughly March 10 in Winona to April 24 in Hibbing, each following that city's local frost dates.
Does the spinach planting date vary across Minnesota?
Yes. Minnesota publishes 102 cities with their own frost dates, so the right spinach 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 spinach take to grow in Minnesota?
Spinach takes about 40–50 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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