When to plant Calendula in Zone 4b
In Zone 4b, Calendula: direct sow outdoors around Apr 26–May 24; direct sow outdoors around Jul 28–Aug 11. Expect to harvest around Jun 15–Jul 13.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 26 – May 24 |
| Direct sow outdoors | Jul 28 – Aug 11 |
| Harvest | Jun 15 – Jul 13 |
| Harvest | Sep 16 – Sep 30 |
Tip: Cool-season and edible; deadhead often and it'll bloom from spring into fall.
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 →