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Can You Grow Butternut Squash in Massachusetts?

US · USDA Zone 6a · zones 5b, 6a, 6b

Grows well here

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

Plant zones

3a–10b

Massachusetts last frost

early April

Massachusetts first frost

late October

Days to harvest

100–120 days

When to plant Butternut Squashes in Massachusetts

Start indoors

Mar 3

Transplant

Apr 1

Harvest

Jul 10 – Jul 30

Dates are approximate, based on Massachusetts'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 Massachusetts

Massachusetts has a humid continental climate. Boston and coastal areas are Zone 6a-6b; inland areas are colder at Zone 5b-6a. Four seasons with a 5-6 month growing window.