When to plant Winter squash in Alaska

In fall, from May 20 – June 10 in Anchorage to June 1 – July 1 in Juneau.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Winter squash planting dates by place in Alaska
PlaceSpringFall
Anchorage—May 20 – June 10
Fairbanks—Not listed
Juneau—June 1 – July 1
Wasilla—May 20 – June 10

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for winter squash.