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When to plant artichoke in Zone 9a
In Zone 9a, start indoors around December 8 – January 5 and transplant around February 23 – March 9.
Your artichoke timeline — Zone 9a
| Start indoors | December 8 – January 5 |
|---|---|
| Transplant | February 23 – March 9 |
| Zone 9a last frost | ~03/02 |
| Zone 9a first frost | ~11/25 |
Start indoors; set out on the frost-free date (the average 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.