When to plant borage in Alaska
Alaska spans USDA zones 2a–6a, so the right time to plant borage shifts by weeks across the state. The window to sow seed directly outdoors runs from about May 3 in Juneau city and to May 22 in Badger — below are local dates for 7 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Anchorage | 5a | May 16 | September 20 | May 16 – May 30 |
| Fairbanks | 2a | May 16 | September 6 | May 16 – May 30 |
| Juneau city and | 6a | May 3 | October 14 | May 3 – May 17 |
| Knik-Fairview | 5a | May 18 | September 20 | May 18 – June 1 |
| Badger | 2a | May 22 | September 2 | May 22 – June 5 |
| College | 2b | May 18 | September 6 | May 18 – June 1 |
| North Lakes | 5a | May 16 | September 23 | May 16 – May 30 |
Borage in Alaska: FAQ
When can I plant borage in Alaska?
Across Alaska, the time to direct-sow borage spans roughly May 3 in Juneau city and to May 22 in Badger, each following that city's local frost dates.
Does the borage planting date vary across Alaska?
Yes. Alaska publishes 7 cities with their own frost dates, so the right borage planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does borage take to grow in Alaska?
Borage takes about 50–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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