When to plant Bush Bean in Zone 4b
In Zone 4b, Bush Bean: direct sow outdoors around May 10–Jun 7. Expect to harvest around Jul 4–Aug 1.
| Step | When |
|---|---|
| Direct sow outdoors | May 10 – Jun 7 |
| Harvest | Jul 4 – Aug 1 |
Tip: Wait until the soil has warmed — beans rot in cold, wet ground. Sow every 2 weeks for a steady harvest.
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 →