When to plant Cilantro in Zone 4b
In Zone 4b, Cilantro: direct sow outdoors around Apr 19–May 17; direct sow outdoors around Jul 28–Aug 18. Expect to harvest around Jun 3–Jul 1.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 19 – May 17 |
| Direct sow outdoors | Jul 28 – Aug 18 |
| Harvest | Jun 3 – Jul 1 |
| Harvest | Sep 11 – Oct 2 |
Tip: Cool-season herb that bolts fast in heat — succession-sow every few weeks.
Zone 4b averages a last spring frost around May 10 and a first fall frost around Sep 22. These are zone averages — look up your ZIP for your exact area.
See the full Zone 4b calendar in the tool →