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Can You Grow Butternut Squash in Utah?

US · USDA Zone 6a · zones 4a, 4b, 5a, 5b, 6a, 6b, 7a

Grows well here

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

Plant zones

3a–10b

Utah last frost

early April

Utah first frost

late October

Days to harvest

100–120 days

When to plant Butternut Squashes in Utah

Start indoors

Mar 3

Transplant

Apr 1

Harvest

Jul 10 – Jul 30

Dates are approximate, based on Utah'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 Utah

Utah has an arid continental climate. Salt Lake City is Zone 6b-7a; southern Utah is Zone 7-8; mountains are Zone 4-5. Low humidity and alkaline soils require irrigation and soil amendment.