DibbleWhen to plant peas 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 peas in Zone 4
| Task | Window |
|---|---|
| Direct sow | Apr 5 to Apr 19 |
| Estimated harvest | Jun 4 to Jun 25 |
The harvest estimate counts 60 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 4; Dibble pins them to your exact ZIP code.
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Pea in a Zone 4 season
Zone 4 gives about 134 frost-free days. Pea 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.
How to grow peas
Peas are hardy, sow 5 weeks before last frost as soon as soil can be worked. Give them a trellis and harvest before summer heat.
Companion plants
Good neighbors for Pea:
Better kept apart:
Pea in other zones
Not in Zone 4? Pick your zone for the same dated windows.
Keep exploring
Pea: 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.