When to plant potatoes in Zone 4

In Zone 4, the last spring frost usually passes around May 10 and the first fall frost arrives around September 21, leaving about 134 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.

Cool climate with a brief warm window. Indoor starts and season extension help.

Planting windows for potatoes in Zone 4

The harvest estimate counts 90 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 4; Dibble pins them to your exact ZIP code.

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Potato in a Zone 4 season

Zone 4 gives about 134 frost-free days. Potato needs roughly 90 days from sowing. That leaves about 44 days of slack, enough for one full crop with a little room for a cold spring.

How to grow potatoes

Plant seed potato pieces, each with an eye, about a hand's width deep once the soil is workable and no longer cold and soggy. Hill soil up around the stems as the plants grow. Tubers stall in hot weather, so aim for the cooler part of the year.

Companion plants

Good neighbors for Potato:

Better kept apart:

Potato in other zones

Not in Zone 4? Pick your zone for the same dated windows.

Keep exploring

Potato: the full growing guide · The Zone 4 planting calendar · Every crop and zone

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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.