When to plant garlic 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 garlic in Zone 4

The harvest estimate counts 240 days to maturity, then a picking window of about 14 days. These windows use typical frost dates for Zone 4; Dibble pins them to your exact ZIP code.

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Garlic in a Zone 4 season

Zone 4 gives about 134 frost-free days. Garlic needs roughly 240 days from sowing. That is longer than the outdoor season here, so this one needs an indoor start, and even then it may want a tunnel or row cover to finish.

How to grow garlic

Plant cloves pointy end up in autumn, or at the start of the cool season where winters are mild (pre-chilled cloves do best there). Where winters freeze, mulch after planting. Harvest when the lower leaves turn brown.

Companion plants

Good neighbors for Garlic:

Better kept apart:

Garlic in other zones

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

Keep exploring

Garlic: 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.