When to plant Nasturtium in Zone 3b
In Zone 3b, Nasturtium: direct sow outdoors around May 20–Jun 3. Expect to harvest around Jul 14–Jul 28.
| Step | When |
|---|---|
| Direct sow outdoors | May 20 – Jun 3 |
| Harvest | Jul 14 – Jul 28 |
Tip: Edible flowers and leaves; direct-sow the large seeds where they're to grow — it resents transplanting.
Zone 3b averages a last spring frost around May 20 and a first fall frost around Sep 12. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3b calendar in the tool →