DibbleWhen to plant winter squash in Zone 6
In Zone 6, the last spring frost usually passes around April 21 and the first fall frost arrives around October 17, leaving about 179 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Generous season. Spring and fall plantings both productive.
Planting windows for winter squash in Zone 6
| Task | Window |
|---|---|
| Direct sow | May 5 to May 19 |
| Estimated harvest | Aug 13 to Sep 3 |
The harvest estimate counts 100 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 6; Dibble pins them to your exact ZIP code.
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Winter Squash in a Zone 6 season
Zone 6 gives about 179 frost-free days. Winter Squash needs roughly 100 days from sowing. That leaves about 79 days of slack, so there is room for a late start or a second planting.
How to grow winter squash
Give winter squash and pumpkins room to roam. Sow 2 weeks after last frost and cure the mature fruit before storing.
Companion plants
Good neighbors for Winter Squash:
Better kept apart:
Winter Squash in other zones
Not in Zone 6? Pick your zone for the same dated windows.
Keep exploring
Winter Squash: the full growing guide · The Zone 6 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.