When to plant Swiss chard in Alaska

In spring, from Apr 15 – June 15 in Juneau to May 10 – June 15 in Wasilla.

In fall, from May 15 – July 1 in Fairbanks to June 1 – July 1 in Wasilla.

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

Swiss chard planting dates by place in Alaska
PlaceSpringFall
AnchorageMay 10 – June 15June 1 – July 1
FairbanksMay 10 – June 15May 15 – July 1
JuneauApr 15 – June 15June 1 – July 20
WasillaMay 10 – June 15June 1 – July 1

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 swiss chard.