When to plant rosemary in Minnesota
Minnesota spans USDA zones 3b–5a, so the right time to plant rosemary shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 28 in Winona to June 12 in Hibbing — below are local dates for 102 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Minneapolis | 5a | April 23 | October 16 | April 30 – May 7 |
| St. Paul | 5a | April 24 | October 16 | May 1 – May 8 |
| Rochester | 4b | April 30 | October 6 | May 7 – May 14 |
| Bloomington | 5a | April 23 | October 18 | April 30 – May 7 |
| Duluth | 4b | May 14 | October 12 | May 21 – May 28 |
| Brooklyn Park | 5a | April 30 | October 8 | May 7 – May 14 |
| Plymouth | 5a | April 29 | October 12 | May 6 – May 13 |
| Woodbury | 5a | April 26 | October 12 | May 3 – May 10 |
Rosemary in Minnesota: FAQ
When can I plant rosemary in Minnesota?
Across Minnesota, the time to transplant rosemary spans roughly April 28 in Winona to June 12 in Hibbing, each following that city's local frost dates.
Does the rosemary planting date vary across Minnesota?
Yes. Minnesota publishes 102 cities with their own frost dates, so the right rosemary planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
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