When to plant shallot in Iowa
Iowa spans USDA zones 5a–6a, so the right time to plant shallot shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 15 in Fort Madison to April 3 in Spencer — below are local dates for 42 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Des Moines | 5b | April 18 | October 20 | March 21 – April 4 |
| Cedar Rapids | 5b | April 27 | October 11 | March 30 – April 13 |
| Davenport | 5b | April 19 | October 22 | March 22 – April 5 |
| Sioux City | 5a | April 29 | October 7 | April 1 – April 15 |
| Iowa City | 5b | April 21 | October 18 | March 24 – April 7 |
| Ankeny | 5b | April 23 | October 15 | March 26 – April 9 |
| West Des Moines | 5b | April 18 | October 20 | March 21 – April 4 |
| Ames | 5b | April 26 | October 8 | March 29 – April 12 |
Shallot in Iowa: FAQ
When can I plant shallot in Iowa?
Across Iowa, the time to transplant shallot spans roughly March 15 in Fort Madison to April 3 in Spencer, each following that city's local frost dates.
Does the shallot planting date vary across Iowa?
Yes. Iowa publishes 42 cities with their own frost dates, so the right shallot 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 shallot take to grow in Iowa?
Shallot takes about 90–120 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.