When to plant Zucchini in Zone 5b
In Zone 5b, Zucchini: direct sow outdoors around Apr 30–May 21. Expect to harvest around Jun 19–Jul 10.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 30 – May 21 |
| Harvest | Jun 19 – Jul 10 |
Tip: Fast and prolific. A couple of plants feed a household — don't over-plant.
Zone 5b averages a last spring frost around Apr 30 and a first fall frost around Oct 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 5b calendar in the tool →