New Jersey frost dates: I
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Imlaystown | Apr 25 | Oct 16 | 174 d | 7a |
| Ironia | Apr 17 | Oct 23 | 189 d | 6b |
| Irvington | Apr 2 | Nov 10 | 222 d | 7a |
| Iselin | Apr 11 | Oct 28 | 200 d | 7a |
| Island Heights | Apr 23 | Oct 20 | 180 d | 7b |
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Imlaystown | Apr 25 | Oct 16 | 174 d | 7a |
| Ironia | Apr 17 | Oct 23 | 189 d | 6b |
| Irvington | Apr 2 | Nov 10 | 222 d | 7a |
| Iselin | Apr 11 | Oct 28 | 200 d | 7a |
| Island Heights | Apr 23 | Oct 20 | 180 d | 7b |