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When to plant spinach in Zone 10b
In Zone 10b, direct-sow around December 13 – December 27. For a fall crop, sow around November 20 – December 4.
Your spinach timeline — Zone 10b
| Direct-sow | December 13 – December 27 |
|---|---|
| Sow for fall | November 20 – December 4 |
| Zone 10b last frost | ~01/20 |
| Zone 10b first frost | ~01/25 |
Direct-sow 3–6 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 10b'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).