When to plant Zinnia in Zone 8b
In Zone 8b, Zinnia: start seeds indoors around Feb 15–Mar 1; transplant outdoors around Mar 22–Mar 29; direct sow outdoors around Mar 15–Mar 29. Expect to harvest around May 14–May 28.
| Step | When |
|---|---|
| Start seeds indoors | Feb 15 – Mar 1 |
| Transplant outdoors | Mar 22 – Mar 29 |
| Direct sow outdoors | Mar 15 – Mar 29 |
| Harvest | May 14 – May 28 |
| Harvest | May 21 – May 28 |
Tip: A cut-flower workhorse. Direct-sow after frost and pinch young plants for more stems.
Zone 8b averages a last spring frost around Mar 15 and a first fall frost around Nov 25. These are zone averages — look up your ZIP for your exact area.
See the full Zone 8b calendar in the tool →