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When to plant radishes in Zone 8a
In Zone 8a, direct-sow around February 26 – March 12. For a fall crop, sow around September 18 – October 2.
Your radishes timeline — Zone 8a
| Direct-sow | February 26 – March 12 |
|---|---|
| Sow for fall | September 18 – October 2 |
| Zone 8a last frost | ~03/26 |
| Zone 8a first frost | ~11/08 |
Direct-sow 2–4 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 8a'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).