When to plant Sunflower in Zone 7b
In Zone 7b, Sunflower: direct sow outdoors around Apr 1–Apr 22. Expect to harvest around Jun 10–Jul 1.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 1 – Apr 22 |
| Harvest | Jun 10 – Jul 1 |
Tip: Direct-sow once frost has passed; sow every two weeks for a long succession of blooms.
Zone 7b averages a last spring frost around Apr 1 and a first fall frost around Nov 10. These are zone averages — look up your ZIP for your exact area.
See the full Zone 7b calendar in the tool →