DibbleWhen to plant swiss chard in Zone 8
In Zone 8, the last spring frost usually passes around March 28 and the first fall frost arrives around November 7, leaving about 224 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Mild winters, long season. Cool crops in fall/winter; heat can limit summer greens.
Planting windows for swiss chard in Zone 8
| Task | Window |
|---|---|
| Direct sow | Mar 14 to Mar 28 |
| Estimated harvest | May 8 to Sep 5 |
The harvest estimate counts 55 days to maturity, then a picking window of about 120 days. These windows use typical frost dates for Zone 8; Dibble pins them to your exact ZIP code.
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How to grow swiss chard
Sow chard a couple of weeks before last frost. Pick outer leaves and it keeps producing from spring through fall.
Companion plants
Good neighbors for Swiss Chard:
Swiss Chard in nearby zones
Keep exploring
Swiss Chard: the full growing guide · The Zone 8 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.