When to plant mizuna in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant mizuna 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 18 |
| Bismarck | 4a | May 10 | September 30 | April 12 – May 24 |
| Grand Forks | 4a | May 10 | October 1 | April 12 – May 24 |
| Minot | 4a | May 10 | October 1 | April 12 – May 24 |
| West Fargo | 4a | May 4 | October 2 | April 6 – May 18 |
| Williston | 4a | May 21 | September 21 | April 23 – June 4 |
| Dickinson | 4b | May 20 | September 22 | April 22 – June 3 |
| Mandan | 4a | May 13 | September 27 | April 15 – May 27 |
Mizuna in North Dakota: FAQ
When can I plant mizuna in North Dakota?
Across North Dakota, the time to direct-sow mizuna spans roughly April 6 in Fargo to April 23 in Williston, each following that city's local frost dates.
Does the mizuna planting date vary across North Dakota?
Yes. North Dakota publishes 9 cities with their own frost dates, so the right mizuna 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 mizuna take to grow in North Dakota?
Mizuna takes about 40–50 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
Never miss a window in your area
An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.