Frost dates by location
| Location | Zone | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|---|
| Concord | 5b | May 8 | Oct 3 | 148 |
| Manchester | 6a | Apr 28 | Oct 13 | 168 |
| Nashua | 6a | Apr 28 | Oct 13 | 168 |
Zones in New Hampshire
Bottom line: a statewide planting date is a compromise nobody's garden actually
lives at. New Hampshire's last-frost spread is
10 days wide. Use the location nearest you.
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