When to plant Zinnia in Zone 8a
In Zone 8a, Zinnia: start seeds indoors around Feb 22–Mar 8; transplant outdoors around Mar 29–Apr 5; direct sow outdoors around Mar 22–Apr 5. Expect to harvest around May 21–Jun 4.
| Step | When |
|---|---|
| Start seeds indoors | Feb 22 – Mar 8 |
| Transplant outdoors | Mar 29 – Apr 5 |
| Direct sow outdoors | Mar 22 – Apr 5 |
| Harvest | May 21 – Jun 4 |
| Harvest | May 28 – Jun 4 |
Tip: A cut-flower workhorse. Direct-sow after frost and pinch young plants for more stems.
Zone 8a averages a last spring frost around Mar 22 and a first fall frost around Nov 18. These are zone averages — look up your ZIP for your exact area.
See the full Zone 8a calendar in the tool →