When to plant bush bean in New Hampshire
New Hampshire spans USDA zones 5a–6a, so the right time to plant bush bean shifts by weeks across the state. The window to sow seed directly outdoors runs from about May 6 in Nashua to May 21 in Keene — below are local dates for 15 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Manchester | 6a | April 30 | October 11 | May 7 – June 11 |
| Nashua | 6a | April 29 | October 8 | May 6 – June 10 |
| Concord | 5b | May 8 | October 3 | May 15 – June 19 |
| Dover | 6a | May 3 | October 10 | May 10 – June 14 |
| Rochester | 6a | April 30 | October 9 | May 7 – June 11 |
| Keene | 5b | May 14 | October 1 | May 21 – June 25 |
| Portsmouth | 6a | May 4 | October 8 | May 11 – June 15 |
| Derry | 6a | April 30 | October 11 | May 7 – June 11 |
Bush Bean in New Hampshire: FAQ
When can I plant bush bean in New Hampshire?
Across New Hampshire, the time to direct-sow bush bean spans roughly May 6 in Nashua to May 21 in Keene, each following that city's local frost dates.
Does the bush bean planting date vary across New Hampshire?
Yes. New Hampshire publishes 15 cities with their own frost dates, so the right bush 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 bush bean take to grow in New Hampshire?
Bush Bean takes about 50–60 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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