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Can You Grow Butternut Squash in Alaska?

US · USDA Zone 4b · zones 1a, 1b, 2a, 2b

Grows well here

Butternut squash thrives here with warm, frost-free summers and full sun.

Plant zones

3a–10b

Alaska last frost

mid-April

Alaska first frost

mid-October

Days to harvest

100–120 days

When to plant Butternut Squashes in Alaska

Start indoors

Mar 18

Transplant

Apr 15

Harvest

Jul 24 – Aug 13

Dates are approximate, based on Alaska's average frost dates. Your exact yard may vary by microclimate.

About Butternut Squash

Butternut squash is the most popular winter squash — sweet, smooth, and superb for storage. A vigorous vining plant that needs warm weather and room to sprawl.

Direct sow after last frost or start indoors 3-4 weeks earlier. Harvest when skin turns tan and hard. Cure 1-2 weeks in a warm spot before storing in a cool dry place.

Full butternut squash growing guide →

Gardening in Alaska

Alaska ranges from subarctic to maritime climates. The interior has very short summers but intense sunlight. Coastal areas are milder. Cold-hardy crops and greenhouses are key.

See what grows well in Alaska →

Frequently asked questions

Can you grow Butternut Squash in Alaska?

Butternut squash thrives here with warm, frost-free summers and full sun.

What zone is Alaska?

Alaska spans USDA Zone 4b (1a, 1b, 2a, 2b).

When do you plant Butternut Squashes in Alaska?

Plant Butternut Squashes around mid-April (start indoors Mar 18), harvest Jul 24 – Aug 13.