When to plant pumpkin in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant pumpkin shifts by weeks across the state. The window to sow seed directly outdoors runs from about May 18 in Fargo to June 4 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 | May 18 – June 1 |
| Bismarck | 4a | May 10 | September 30 | May 24 – June 7 |
| Grand Forks | 4a | May 10 | October 1 | May 24 – June 7 |
| Minot | 4a | May 10 | October 1 | May 24 – June 7 |
| West Fargo | 4a | May 4 | October 2 | May 18 – June 1 |
| Williston | 4a | May 21 | September 21 | June 4 – June 18 |
| Dickinson | 4b | May 20 | September 22 | June 3 – June 17 |
| Mandan | 4a | May 13 | September 27 | May 27 – June 10 |
Pumpkin in North Dakota: FAQ
When can I plant pumpkin in North Dakota?
Across North Dakota, the time to direct-sow pumpkin spans roughly May 18 in Fargo to June 4 in Williston, each following that city's local frost dates.
Does the pumpkin planting date vary across North Dakota?
Yes. North Dakota publishes 9 cities with their own frost dates, so the right pumpkin 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 pumpkin take to grow in North Dakota?
Pumpkin takes about 90–110 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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