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When to plant cilantro in Zone 3b
In Zone 3b, direct-sow around May 20 – June 3.
Your cilantro timeline — Zone 3b
| Direct-sow | May 20 – June 3 |
|---|---|
| Zone 3b last frost | ~05/20 |
| Zone 3b first frost | ~09/19 |
Direct-sow in the garden after danger of frost is past. Difficult to transplant because of its taproot. [src]Cited: University of Illinois Extension — Herb Gardening: Cilantro
Dates computed from Zone 3b'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 Illinois Extension — Herb Gardening: Cilantro.