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When to Plant Potatoes in Zone 4

In USDA zone 4, plant outdoors May 1 to July 30, and expect your first harvest around July 30.

Potatoes planting calendar for USDA Zone 4

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Direct sow

May 1

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Projected first harvest

Jul 30

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🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4a — approximate

Most potatoes mature in about 70 to 110 days depending on the variety. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.

What zone 4 means for potatoes

Average last spring frost

May 15

Average first fall frost

September 20

Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and potatoes need about 70 to 110 days depending on the variety to mature.

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