When to plant chervil in New Hampshire
New Hampshire spans USDA zones 5a–6a, so the right time to plant chervil shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 1 in Nashua to April 16 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 2 – April 30 |
| Nashua | 6a | April 29 | October 8 | April 1 – April 29 |
| Concord | 5b | May 8 | October 3 | April 10 – May 8 |
| Dover | 6a | May 3 | October 10 | April 5 – May 3 |
| Rochester | 6a | April 30 | October 9 | April 2 – April 30 |
| Keene | 5b | May 14 | October 1 | April 16 – May 14 |
| Portsmouth | 6a | May 4 | October 8 | April 6 – May 4 |
| Derry | 6a | April 30 | October 11 | April 2 – April 30 |
Chervil in New Hampshire: FAQ
When can I plant chervil in New Hampshire?
Across New Hampshire, the time to direct-sow chervil spans roughly April 1 in Nashua to April 16 in Keene, each following that city's local frost dates.
Does the chervil planting date vary across New Hampshire?
Yes. New Hampshire publishes 15 cities with their own frost dates, so the right chervil 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 chervil take to grow in New Hampshire?
Chervil takes about 55–70 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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