DibbleWhen to plant fennel in Zone 7
In Zone 7, the last spring frost usually passes around April 10 and the first fall frost arrives around October 29, leaving about 202 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Long season. Great for succession planting and fall crops.
Planting windows for fennel in Zone 7
| Task | Window |
|---|---|
| Direct sow | Apr 10 to Apr 24 |
| Estimated harvest | Jun 29 to Jul 20 |
The harvest estimate counts 80 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 7; Dibble pins them to your exact ZIP code.
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Fennel in a Zone 7 season
Zone 7 gives about 202 frost-free days. Fennel needs roughly 80 days from sowing. That leaves about 122 days of slack, so there is room for a late start or a second planting.
How to grow fennel
Sow bulb fennel once the weather has settled and nights are no longer cold: a chill can make it bolt. Keep it moist, and mound soil around the swelling bulb to blanch it. Time it so the bulbs swell in mild weather, not in the heat.
Fennel in other zones
Not in Zone 7? Pick your zone for the same dated windows.
Keep exploring
Fennel: the full growing guide · The Zone 7 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.