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When to plant swiss chard in Zone 7b
In Zone 7b, direct-sow or transplant around March 16 – March 30. For a fall crop, sow around August 12 – August 26.
Your swiss chard timeline — Zone 7b
| Start indoors | February 9 – February 16 |
|---|---|
| Transplant | March 16 – March 30 |
| Sow for fall | August 12 – August 26 |
| Zone 7b last frost | ~04/06 |
| Zone 7b first frost | ~11/01 |
Start indoors or direct-sow; set out / sow 2 weeks before the last frost. [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”
Dates computed from Zone 7b's median NOAA frost normals and the cited rule. Your town may differ by a week or two — check your exact ZIP.
What you'll need
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Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; UGA Extension (days to maturity).