When to plant chervil in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant chervil shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 6 in Fargo to April 23 in Williston — below are local dates for 9 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Fargo | 4a | May 4 | October 2 | April 6 – May 4 |
| Bismarck | 4a | May 10 | September 30 | April 12 – May 10 |
| Grand Forks | 4a | May 10 | October 1 | April 12 – May 10 |
| Minot | 4a | May 10 | October 1 | April 12 – May 10 |
| West Fargo | 4a | May 4 | October 2 | April 6 – May 4 |
| Williston | 4a | May 21 | September 21 | April 23 – May 21 |
| Dickinson | 4b | May 20 | September 22 | April 22 – May 20 |
| Mandan | 4a | May 13 | September 27 | April 15 – May 13 |
Chervil in North Dakota: FAQ
When can I plant chervil in North Dakota?
Across North Dakota, the time to direct-sow chervil spans roughly April 6 in Fargo to April 23 in Williston, each following that city's local frost dates.
Does the chervil planting date vary across North Dakota?
Yes. North Dakota publishes 9 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 North Dakota?
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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