Frost dates by location
| Location | Zone | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|---|
| Detroit City | 6b | Apr 21 | Oct 31 | 193 |
| Marquette | 6a | May 8 | Oct 21 | 166 |
| Detroit | 6b | Apr 26 | Oct 21 | 178 |
| Grand Rapids | 6a | May 4 | Oct 14 | 163 |
| Warren | 6b | Apr 26 | Oct 21 | 178 |
| Sterling Heights | 6a | May 2 | Oct 16 | 167 |
| Ann Arbor | 6a | May 2 | Oct 12 | 163 |
| Lansing | 6a | May 1 | Oct 15 | 167 |
| Clinton Township | 6a | May 1 | Oct 20 | 172 |
| Flint | 6a | May 4 | Oct 12 | 161 |
| Dearborn | 6b | Apr 26 | Oct 21 | 178 |
| Livonia | 6b | Apr 26 | Oct 21 | 178 |
| Canton | 6b | Apr 26 | Oct 21 | 178 |
| Troy | 6a | May 2 | Oct 16 | 167 |
Zones in Michigan
Bottom line: a statewide planting date is a compromise nobody's garden actually
lives at. Michigan's last-frost spread is
17 days wide. Use the location nearest you.
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