When to plant swiss chard in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant swiss chard shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 20 in Fargo to May 7 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 20 – June 1 |
| Bismarck | 4a | May 10 | September 30 | April 26 – June 7 |
| Grand Forks | 4a | May 10 | October 1 | April 26 – June 7 |
| Minot | 4a | May 10 | October 1 | April 26 – June 7 |
| West Fargo | 4a | May 4 | October 2 | April 20 – June 1 |
| Williston | 4a | May 21 | September 21 | May 7 – June 18 |
| Dickinson | 4b | May 20 | September 22 | May 6 – June 17 |
| Mandan | 4a | May 13 | September 27 | April 29 – June 10 |
Swiss Chard in North Dakota: FAQ
When can I plant swiss chard in North Dakota?
Across North Dakota, the time to direct-sow swiss chard spans roughly April 20 in Fargo to May 7 in Williston, each following that city's local frost dates.
Does the swiss chard planting date vary across North Dakota?
Yes. North Dakota publishes 9 cities with their own frost dates, so the right swiss chard 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 swiss chard take to grow in North Dakota?
Swiss Chard 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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