DibbleWhen to plant kale 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 kale in Zone 6
| Task | Window |
|---|---|
| Start seeds indoors | Mar 10 to Mar 24 |
| Transplant | Apr 7 to Apr 21 |
| Estimated harvest | Jun 6 to Aug 5 |
The harvest estimate counts 60 days to maturity, then a picking window of about 60 days. These windows use typical frost dates for Zone 6; Dibble pins them to your exact ZIP code.
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Kale in a Zone 6 season
Zone 6 gives about 179 frost-free days. Kale needs roughly 60 days from transplant. That leaves about 119 days of slack, so there is room for a late start or a second planting.
How to grow kale
Start kale indoors 6 weeks before last frost and transplant 2 weeks before. It's hardy and even sweeter after a fall frost.
Companion plants
Good neighbors for Kale:
Better kept apart:
Kale in other zones
Not in Zone 6? Pick your zone for the same dated windows.
Keep exploring
Kale: 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.