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When to plant sweet potatoes in Zone 2a
In Zone 2a, direct-sow around May 21 – June 4.
Your sweet potatoes timeline — Zone 2a
| Direct-sow | May 21 – June 4 |
|---|---|
| Zone 2a last frost | ~05/17 |
| Zone 2a first frost | ~09/07 |
Plant slips 1–2 weeks after the last frost. [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”
Dates computed from Zone 2a'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 2026-07-17. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; University of Georgia Extension — Vegetable Planting Chart (Circular C963) (days to maturity).