When to plant shiso (perilla) in North Dakota
North Dakota spans USDA zones 4a–4b, so the right time to plant shiso (perilla) shifts by weeks across the state. The window to transplant seedlings outdoors runs from about May 11 in Fargo to May 28 in Williston — below are local dates for 9 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Fargo | 4a | May 4 | October 2 | May 11 – May 18 |
| Bismarck | 4a | May 10 | September 30 | May 17 – May 24 |
| Grand Forks | 4a | May 10 | October 1 | May 17 – May 24 |
| Minot | 4a | May 10 | October 1 | May 17 – May 24 |
| West Fargo | 4a | May 4 | October 2 | May 11 – May 18 |
| Williston | 4a | May 21 | September 21 | May 28 – June 4 |
| Dickinson | 4b | May 20 | September 22 | May 27 – June 3 |
| Mandan | 4a | May 13 | September 27 | May 20 – May 27 |
Shiso (Perilla) in North Dakota: FAQ
When can I plant shiso (perilla) in North Dakota?
Across North Dakota, the time to transplant shiso (perilla) spans roughly May 11 in Fargo to May 28 in Williston, each following that city's local frost dates.
Does the shiso (perilla) planting date vary across North Dakota?
Yes. North Dakota publishes 9 cities with their own frost dates, so the right shiso (perilla) 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 shiso (perilla) take to grow in North Dakota?
Shiso (Perilla) takes about 70–90 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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