When to plant yardlong bean in Minnesota
Minnesota spans USDA zones 3b–5a, so the right time to plant yardlong bean shifts by weeks across the state. The window to transplant seedlings outdoors runs from about May 5 in Winona to June 19 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 | May 7 – May 14 |
| St. Paul | 5a | April 24 | October 16 | May 8 – May 15 |
| Rochester | 4b | April 30 | October 6 | May 14 – May 21 |
| Bloomington | 5a | April 23 | October 18 | May 7 – May 14 |
| Duluth | 4b | May 14 | October 12 | May 28 – June 4 |
| Brooklyn Park | 5a | April 30 | October 8 | May 14 – May 21 |
| Plymouth | 5a | April 29 | October 12 | May 13 – May 20 |
| Woodbury | 5a | April 26 | October 12 | May 10 – May 17 |
Yardlong Bean in Minnesota: FAQ
When can I plant yardlong bean in Minnesota?
Across Minnesota, the time to transplant yardlong bean spans roughly May 5 in Winona to June 19 in Hibbing, each following that city's local frost dates.
Does the yardlong bean planting date vary across Minnesota?
Yes. Minnesota publishes 102 cities with their own frost dates, so the right yardlong bean 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 yardlong bean take to grow in Minnesota?
Yardlong Bean takes about 70–90 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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