When to plant broccoli in Michigan
Michigan spans USDA zones 4b–6b, so the right time to plant broccoli shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 29 in Port Huron to April 28 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 6 – April 20 |
| Grand Rapids | 6a | May 6 | October 10 | April 15 – April 29 |
| Warren | 6b | April 21 | October 31 | March 31 – April 14 |
| Sterling Heights | 6b | April 30 | October 24 | April 9 – April 23 |
| Ann Arbor | 6a | May 5 | October 10 | April 14 – April 28 |
| Lansing | 6a | May 1 | October 13 | April 10 – April 24 |
| Dearborn | 6b | May 1 | October 15 | April 10 – April 24 |
| Livonia | 6b | May 1 | October 17 | April 10 – April 24 |
Broccoli in Michigan: FAQ
When can I plant broccoli in Michigan?
Across Michigan, the time to transplant broccoli spans roughly March 29 in Port Huron to April 28 in Cadillac, each following that city's local frost dates.
Does the broccoli planting date vary across Michigan?
Yes. Michigan publishes 101 cities with their own frost dates, so the right broccoli 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 broccoli take to grow in Michigan?
Broccoli takes about 55–80 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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