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When to plant watermelon in Zone 9a
In Zone 9a, start indoors around February 16 – February 23 and transplant around March 9 – March 23.
Your watermelon timeline — Zone 9a
| Start indoors | February 16 – February 23 |
|---|---|
| Transplant | March 9 – March 23 |
| Zone 9a last frost | ~03/02 |
| Zone 9a first frost | ~11/25 |
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 9a'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).