Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Zone 12a

In USDA zone 12a the coldest night of an average winter reaches 50 to 55 °F (10 to 12.8 °C). 30 ZIP codes (0.1% of all) are in this zone.

Zone12a50 to 55 °F
Coldest night10 to 12.8 °C
ZIP codes30
Typical last frost—
Typical first frost—

States with zone 12a

Hawaii24 ZIPsPuerto Rico6 ZIPs

Cities mostly in zone 12a

Cayey, PR2 ZIPs

← Zone 11b (colder)Zone 12b (warmer) →

Questions

What is the temperature range of zone 12a?

Zone 12a covers places where the coldest night of an average winter (the annual extreme minimum averaged over 1991–2020) is 50 to 55 °F, or 10 to 12.8 °C.

Which states have zone 12a?

Zone 12a occurs in 2 states; the most ZIP codes are in Hawaii, Puerto Rico.

What can I grow in zone 12a?

Perennials, shrubs and trees labeled hardy to zone 12a or a lower (colder) number should survive a typical winter. Annual vegetables depend on frost dates rather than zone.

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.