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Can You Grow Winter Squash in North Dakota?

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

Grows well here

Winter squash grows well here with warm summers — it needs heat to mature and set fruit.

Plant zones

3a–10b

North Dakota last frost

late April

North Dakota first frost

early October

Days to harvest

90–120 days

When to plant Winter Squashes in North Dakota

Start indoors

Mar 28

Transplant

Apr 25

Harvest

Jul 24 – Aug 23

Dates are approximate, based on North Dakota'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.

Full winter squash growing guide →

Gardening in North Dakota

North Dakota has a harsh continental climate with cold winters and short warm summers. Most of the state is Zone 3b-4a. Focus on cold-hardy crops and short-season varieties.

See what grows well in North Dakota →

Frequently asked questions

Can you grow Winter Squash in North Dakota?

Winter squash grows well here with warm summers — it needs heat to mature and set fruit.

What zone is North Dakota?

North Dakota spans USDA Zone 4a (3a, 3b, 4a, 4b).

When do you plant Winter Squashes in North Dakota?

Plant Winter Squashes around late April (start indoors Mar 28), harvest Jul 24 – Aug 23.