DibbleWhen to plant Swiss chard 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 Swiss chard in Zone 11
| Task | Window |
|---|---|
| Direct sow | Dec 18 to Jan 1 |
| Estimated harvest | Feb 11 to Jun 11 |
The harvest estimate counts 55 days to maturity, then a picking window of about 120 days. These windows use typical frost dates for Zone 11; Dibble pins them to your exact ZIP code.
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Swiss Chard in a Zone 11 season
Zone 11 gives about 365 frost-free days. Swiss Chard needs roughly 55 days from sowing. That leaves about 310 days of slack, so there is room for a late start or a second planting.
How to grow Swiss chard
Sow chard once the soil is workable and no longer cold. Pick the outer leaves and it keeps producing for many months. It shrugs off heat better than spinach or lettuce.
Companion plants
Good neighbors for Swiss Chard:
Swiss Chard in other zones
Not in Zone 11? Pick your zone for the same dated windows.
Keep exploring
Swiss Chard: 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.