When to plant carrot in New Hampshire
New Hampshire spans USDA zones 5a–6a, so the right time to plant carrot shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 8 in Nashua to April 23 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 | April 9 – May 21 |
| Nashua | 6a | April 29 | October 8 | April 8 – May 20 |
| Concord | 5b | May 8 | October 3 | April 17 – May 29 |
| Dover | 6a | May 3 | October 10 | April 12 – May 24 |
| Rochester | 6a | April 30 | October 9 | April 9 – May 21 |
| Keene | 5b | May 14 | October 1 | April 23 – June 4 |
| Portsmouth | 6a | May 4 | October 8 | April 13 – May 25 |
| Derry | 6a | April 30 | October 11 | April 9 – May 21 |
Carrot in New Hampshire: FAQ
When can I plant carrot in New Hampshire?
Across New Hampshire, the time to direct-sow carrot spans roughly April 8 in Nashua to April 23 in Keene, each following that city's local frost dates.
Does the carrot planting date vary across New Hampshire?
Yes. New Hampshire publishes 15 cities with their own frost dates, so the right carrot 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 carrot take to grow in New Hampshire?
Carrot takes about 60–80 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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