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Can You Grow Butternut Squash in Minnesota?

US · USDA Zone 4a · zones 2b, 3a, 3b, 4a, 4b

Grows well here

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

Plant zones

3a–10b

Minnesota last frost

late April

Minnesota first frost

early October

Days to harvest

100–120 days

When to plant Butternut Squashes in Minnesota

Start indoors

Mar 28

Transplant

Apr 25

Harvest

Aug 3 – Aug 23

Dates are approximate, based on Minnesota'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 Minnesota

Minnesota has a cold humid continental climate. The Twin Cities are Zone 4b-5a; northern Minnesota reaches Zone 2b-3a. Cold winters but warm productive summers.