When to plant Zinnia in Zone 7b
In Zone 7b, Zinnia: start seeds indoors around Mar 4–Mar 18; transplant outdoors around Apr 8–Apr 15; direct sow outdoors around Apr 1–Apr 15. Expect to harvest around May 31–Jun 14.
| Step | When |
|---|---|
| Start seeds indoors | Mar 4 – Mar 18 |
| Transplant outdoors | Apr 8 – Apr 15 |
| Direct sow outdoors | Apr 1 – Apr 15 |
| Harvest | May 31 – Jun 14 |
| Harvest | Jun 7 – Jun 14 |
Tip: A cut-flower workhorse. Direct-sow after frost and pinch young plants for more stems.
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 →