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When to plant watermelon in Zone 6a
In Zone 6a, start indoors around April 16 – April 23 and transplant around May 7 – May 21.
Your watermelon timeline — Zone 6a
| Start indoors | April 16 – April 23 |
|---|---|
| Transplant | May 7 – May 21 |
| Zone 6a last frost | ~04/30 |
| Zone 6a first frost | ~10/15 |
Start indoors; set out 2 weeks after the last frost. [src]Cited: Johnny's Selected Seeds — Seed-Starting Date Calculator chart
Dates computed from Zone 6a'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: Johnny's Selected Seeds — Seed-Starting Date Calculator chart; University of Georgia Extension — Vegetable Planting Chart (Circular C963) (days to maturity).