USDA hardiness zone 12b
In zone 12b the average coldest winter night reaches 55°F to 60°F. Plants labeled for zone 12 (or a colder zone) can survive the winter outdoors here. 31 U.S. cities with 10,000+ residents are in this zone.
| City | State | Zone | Avg. last frost | Avg. first frost |
|---|---|---|---|---|
| Honolulu | HI | 12b | rare | rare |
| East Honolulu | HI | 12b | rare | rare |
| Hilo | HI | 12b | rare | rare |
| Joint Base Pearl Harbor Hickam | HI | 12b | rare | rare |
| Aliamanu / Salt Lakes / Foster Village | HI | 12b | rare | rare |
| Kailua | HI | 12b | rare | rare |
| Kaneohe | HI | 12b | rare | rare |
| Kahului | HI | 12b | rare | rare |
| Manoa | HI | 12b | rare | rare |
| ‘Ewa Gentry | HI | 12b | rare | rare |
| Kīhei | HI | 12b | rare | rare |
| Kalihi Valley | HI | 12b | rare | rare |
| Waikīkī | HI | 12b | rare | rare |
| Diamond Head / Kapahulu / Saint Louis Heights | HI | 12b | rare | rare |
| Niu Valley | HI | 12b | rare | rare |
| Makakilo | HI | 12b | rare | rare |
| ‘Ewa Beach | HI | 12b | rare | rare |
| Kuliouou - Kalani Iki | HI | 12b | rare | rare |
| Kapolei Villages | HI | 12b | rare | rare |
| Makakilo City | HI | 12b | rare | rare |
| Wailuku | HI | 12b | rare | rare |
| Kapolei | HI | 12b | rare | rare |
| Hālawa | HI | 12b | rare | rare |
| Waimalu | HI | 12b | rare | rare |
| Hālawa Heights | HI | 12b | rare | rare |
| Waianae | HI | 12b | rare | rare |
| Nānākuli | HI | 12b | rare | rare |
| Palolo | HI | 12b | rare | rare |
| Lahaina | HI | 12b | rare | rare |
| Hawaiian Paradise Park | HI | 12b | rare | rare |
| Kapa‘a | HI | 12b | rare | rare |