USDA hardiness zone 12a
In zone 12a the average coldest winter night reaches 50°F to 55°F. Plants labeled for zone 12 (or a colder zone) can survive the winter outdoors here. 10 U.S. cities with 10,000+ residents are in this zone.
| City | State | Zone | Avg. last frost | Avg. first frost |
|---|---|---|---|---|
| Pearl City | HI | 12a | rare | rare |
| Waipahu | HI | 12a | rare | rare |
| Mililani Town | HI | 12a | rare | rare |
| Mililani Mauka | HI | 12a | rare | rare |
| Mililani Mauka / Launani Valley | HI | 12a | rare | rare |
| Wahiawā | HI | 12a | rare | rare |
| Schofield Barracks | HI | 12a | rare | rare |
| Royal Kunia | HI | 12a | rare | rare |
| Waipio | HI | 12a | rare | rare |
| Village Park | HI | 12a | rare | rare |