When to plant rutabaga in Iowa
Iowa spans USDA zones 5a–6a, so the right time to plant rutabaga shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 29 in Fort Madison to April 17 in Spencer — below are local dates for 42 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Des Moines | 5b | April 18 | October 20 | April 4 – May 2 |
| Cedar Rapids | 5b | April 27 | October 11 | April 13 – May 11 |
| Davenport | 5b | April 19 | October 22 | April 5 – May 3 |
| Sioux City | 5a | April 29 | October 7 | April 15 – May 13 |
| Iowa City | 5b | April 21 | October 18 | April 7 – May 5 |
| Ankeny | 5b | April 23 | October 15 | April 9 – May 7 |
| West Des Moines | 5b | April 18 | October 20 | April 4 – May 2 |
| Ames | 5b | April 26 | October 8 | April 12 – May 10 |
Rutabaga in Iowa: FAQ
When can I plant rutabaga in Iowa?
Across Iowa, the time to direct-sow rutabaga spans roughly March 29 in Fort Madison to April 17 in Spencer, each following that city's local frost dates.
Does the rutabaga planting date vary across Iowa?
Yes. Iowa publishes 42 cities with their own frost dates, so the right rutabaga 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 rutabaga take to grow in Iowa?
Rutabaga 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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