When to plant Snapdragon in Zone 3a
In Zone 3a, Snapdragon: start seeds indoors around Mar 30–Apr 13; transplant outdoors around May 11–May 25. Expect to harvest around Aug 9–Aug 23.
| Step | When |
|---|---|
| Start seeds indoors | Mar 30 – Apr 13 |
| Transplant outdoors | May 11 – May 25 |
| Harvest | Aug 9 – Aug 23 |
Tip: Cool-tolerant; transplant a bit before the last frost. Pinch tips for bushier, multi-stem plants.
Zone 3a averages a last spring frost around May 25 and a first fall frost around Sep 8. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3a calendar in the tool →