When to plant Cucumber in Zone 4b
In Zone 4b, Cucumber: start seeds indoors around Apr 19–Apr 26; transplant outdoors around May 17–May 24; direct sow outdoors around May 17–May 31. Expect to harvest around Jul 16–Jul 23.
| Step | When |
|---|---|
| Start seeds indoors | Apr 19 – Apr 26 |
| Transplant outdoors | May 17 – May 24 |
| Direct sow outdoors | May 17 – May 31 |
| Harvest | Jul 16 – Jul 23 |
| Harvest | Jul 16 – Jul 30 |
Tip: Dislikes root disturbance — direct-sow if you can, or use peat pots for transplants.
Zone 4b averages a last spring frost around May 10 and a first fall frost around Sep 22. These are zone averages — look up your ZIP for your exact area.
See the full Zone 4b calendar in the tool →