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Frost dates and growing zones in New Hampshire
Towns covered so far in New Hampshire fall in USDA zones 5b, 6a. Median dates mean frost comes later (spring) or earlier (fall) in half of years.
Towns
| Town | Zone | Median last frost | Median first frost |
|---|---|---|---|
| Manchester | 6a | Apr 30 | Oct 11 |
| Concord | 5b | May 8 | Oct 3 |
| Dover | 6a | May 8 | Oct 4 |