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Can You Grow Winter Squash in Alaska?
US · USDA Zone 4b · zones 1a, 1b, 2a, 2b
Winter squash grows well here with warm summers — it needs heat to mature and set fruit.
Plant zones
Alaska last frost
Alaska first frost
Days to harvest
When to plant Winter Squashes in Alaska
Start indoors
Transplant
Harvest
Dates are approximate, based on Alaska's average frost dates. Your exact yard may vary by microclimate.
About Winter Squash
Winter squash (butternut, acorn, spaghetti) are the long-storing hard-skinned squash you plant in spring and harvest in fall. Vigorous, sprawling, and highly productive.
Direct sow or start indoors 4 weeks before last frost; transplant after frost. Give vines room (6-8 ft) or a trellis. Harvest when skin is hard and you can't dent it with a fingernail. Cure in a warm place for 1-2 weeks for long storage.
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.
Frequently asked questions
Can you grow Winter Squash in Alaska?
Winter squash grows well here with warm summers — it needs heat to mature and set fruit.
What zone is Alaska?
Alaska spans USDA Zone 4b (1a, 1b, 2a, 2b).
When do you plant Winter Squashes in Alaska?
Plant Winter Squashes around mid-April (start indoors Mar 18), harvest Jul 14 – Aug 13.