When to plant Radish in Zone 4a
In Zone 4a, Radish: direct sow outdoors around Apr 17–May 29; direct sow outdoors around Jul 24–Aug 21. Expect to harvest around May 15–Jun 26.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 17 – May 29 |
| Direct sow outdoors | Jul 24 – Aug 21 |
| Harvest | May 15 – Jun 26 |
| Harvest | Aug 21 – Sep 18 |
Tip: The fastest crop in the garden — sow in succession and harvest before they turn woody.
Zone 4a averages a last spring frost around May 15 and a first fall frost around Sep 18. These are zone averages — look up your ZIP for your exact area.
See the full Zone 4a calendar in the tool →