Alaska planting zones & frost dates
USDA hardiness zones in Alaska go from 2a to 7a. Pick your city for its average frost dates and a planting calendar, or search by ZIP code.
| City | Zone | Avg. last frost | Avg. first frost |
|---|---|---|---|
| Anchorage | 5a | May 1 | Sep 29 |
| Badger | 2a | May 22 | Sep 2 |
| College | 2b | May 18 | Sep 6 |
| Eagle River | 5a | May 9 | Sep 26 |
| Fairbanks | 2b | May 16 | Sep 6 |
| Juneau | 7a | Apr 20 | Oct 22 |
| Knik-Fairview | 5a | May 18 | Sep 20 |
Cities with 10,000+ residents. Data: USDA Plant Hardiness Zone Map 2023 and NOAA Climate Normals 1991–2020. Sources and method.