DibbleWhen to plant cucumbers 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 cucumbers in Zone 4
| Task | Window |
|---|---|
| Direct sow | May 24 to Jun 7 |
| Estimated harvest | Jul 23 to Aug 27 |
The harvest estimate counts 60 days to maturity, then a picking window of about 35 days. These windows use typical frost dates for Zone 4; Dibble pins them to your exact ZIP code.
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Cucumber in a Zone 4 season
Zone 4 gives about 134 frost-free days. Cucumber needs roughly 60 days from sowing. That leaves about 74 days of slack, so there is room for a late start or a second planting.
Sowing every 21 days, Zone 4 has room for about 4 plantings.
How to grow cucumbers
Sow cucumbers 2 weeks after last frost in warm soil. Trellising saves space and keeps fruit clean.
Companion plants
Good neighbors for Cucumber:
Better kept apart:
Cucumber in other zones
Not in Zone 4? Pick your zone for the same dated windows.
Keep exploring
Cucumber: 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.