When to plant radicchio in Michigan
Michigan spans USDA zones 4b–6b, so the right time to plant radicchio shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 5 in Port Huron to May 5 in Cadillac — below are local dates for 101 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Detroit | 6b | April 27 | October 25 | April 13 – April 27 |
| Grand Rapids | 6a | May 6 | October 10 | April 22 – May 6 |
| Warren | 6b | April 21 | October 31 | April 7 – April 21 |
| Sterling Heights | 6b | April 30 | October 24 | April 16 – April 30 |
| Ann Arbor | 6a | May 5 | October 10 | April 21 – May 5 |
| Lansing | 6a | May 1 | October 13 | April 17 – May 1 |
| Dearborn | 6b | May 1 | October 15 | April 17 – May 1 |
| Livonia | 6b | May 1 | October 17 | April 17 – May 1 |
Radicchio in Michigan: FAQ
When can I plant radicchio in Michigan?
Across Michigan, the time to transplant radicchio spans roughly April 5 in Port Huron to May 5 in Cadillac, each following that city's local frost dates.
Does the radicchio planting date vary across Michigan?
Yes. Michigan publishes 101 cities with their own frost dates, so the right radicchio 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 radicchio take to grow in Michigan?
Radicchio takes about 60–90 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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