DibbleWhen to plant fennel in Zone 11
In Zone 11, the last spring frost usually passes around January 1 and the first fall frost arrives around December 31, leaving about 365 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Frost-free, tropical. Year-round growing; timing follows wet/dry and heat, not frost.
Planting windows for fennel in Zone 11
| Task | Window |
|---|---|
| Direct sow | Dec 18 to Jan 1 |
| Estimated harvest | Mar 8 to Mar 29 |
The harvest estimate counts 80 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 11; Dibble pins them to your exact ZIP code.
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Fennel in a Zone 11 season
Zone 11 gives about 365 frost-free days. Fennel needs roughly 80 days from sowing. That leaves about 285 days of slack, so there is room for a late start or a second planting.
How to grow fennel
Sow bulb fennel a couple of weeks before last frost. Keep it cool and moist, and mound soil around the swelling bulb to blanch it.
Fennel in other zones
Not in Zone 11? Pick your zone for the same dated windows.
Keep exploring
Fennel: the full growing guide · The Zone 11 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.