Plant Hardiness Zone by Municipality
Ontario
| 1961-1990 zone | 1981-2010 zone | 1961-1990 hardiness index | 1981-2010 hardiness index | |
|---|---|---|---|---|
| Ignace | 2b | 3b | 28 | 36 |
| Ilderton | 5b | 6a | 59 | 64 |
| Ingersoll | 5b | 6a | 58 | 64 |
| Ingleside | 5a | 5b | 50 | 55 |
| Innerkip | 5b | 6a | 57 | 62 |
| Innisfil | 5a | 5b | 52 | 57 |
| Inverary | 5b | 5b | 55 | 59 |
| Ipperwash Beach | 6a | 6b | 63 | 66 |
| Iron Bridge | 4a | 5a | 42 | 50 |
| Iroquois | 5a | 5b | 52 | 55 |
| Iroquois Falls | 1b | 2b | 18 | 27 |
- Date modified: