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When to plant cauliflower in Zone 10b
In Zone 10b, start indoors around November 25 – December 9 and transplant around December 30 – January 13. For a fall crop, sow around October 21 – November 4.
Your cauliflower timeline — Zone 10b
| Start indoors | November 25 – December 9 |
|---|---|
| Transplant | December 30 – January 13 |
| Sow for fall | October 21 – November 4 |
| Zone 10b last frost | ~01/20 |
| Zone 10b first frost | ~01/25 |
Start indoors; set out 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 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).