When to plant potato in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant potato 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 – April 20 |
| Bismarck | 4a | May 10 | September 30 | April 12 – April 26 |
| Grand Forks | 4a | May 10 | October 1 | April 12 – April 26 |
| Minot | 4a | May 10 | October 1 | April 12 – April 26 |
| West Fargo | 4a | May 4 | October 2 | April 6 – April 20 |
| Williston | 4a | May 21 | September 21 | April 23 – May 7 |
| Dickinson | 4b | May 20 | September 22 | April 22 – May 6 |
| Mandan | 4a | May 13 | September 27 | April 15 – April 29 |
Potato in North Dakota: FAQ
When can I plant potato in North Dakota?
Across North Dakota, the time to direct-sow potato spans roughly April 6 in Fargo to April 23 in Williston, each following that city's local frost dates.
Does the potato planting date vary across North Dakota?
Yes. North Dakota publishes 9 cities with their own frost dates, so the right potato 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 potato take to grow in North Dakota?
Potato takes about 70–120 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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