Minnesota frost dates: Z
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Zimmerman | May 7 | Sep 28 | 144 d | 4b |
| Zumbro Falls | May 7 | Oct 2 | 148 d | 4b |
| Zumbrota | May 9 | Sep 30 | 144 d | 4b |
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Zimmerman | May 7 | Sep 28 | 144 d | 4b |
| Zumbro Falls | May 7 | Oct 2 | 148 d | 4b |
| Zumbrota | May 9 | Sep 30 | 144 d | 4b |