DibbleWhen to plant hot peppers 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 hot peppers in Zone 4
| Task | Window |
|---|---|
| Start seeds indoors | Mar 29 to Apr 12 |
| Transplant | Jun 7 to Jun 21 |
| Estimated harvest | Aug 26 to Nov 4 |
The harvest estimate counts 80 days to maturity, then a picking window of about 70 days. These windows use typical frost dates for Zone 4; Dibble pins them to your exact ZIP code.
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Hot Pepper in a Zone 4 season
Zone 4 gives about 134 frost-free days. Hot Pepper needs roughly 80 days from transplant. That leaves about 54 days of slack, enough for one full crop with a little room for a cold spring.
How to grow hot peppers
Chilies need even more heat than sweet peppers. Start seeds indoors about 10 weeks before planting out, and transplant into warm soil once nights stay warm.
Companion plants
Good neighbors for Hot Pepper:
Better kept apart:
Hot Pepper in other zones
Not in Zone 4? Pick your zone for the same dated windows.
Keep exploring
Hot Pepper: the full growing guide · The Zone 4 planting calendar · Every crop and zone
Plant at the right time this season
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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.