When to plant Potato in Zone 4b
In Zone 4b, Potato: direct sow outdoors around Apr 26–May 24. Expect to harvest around Jul 25–Aug 22.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 26 – May 24 |
| Harvest | Jul 25 – Aug 22 |
Tip: Plant seed potatoes around the last frost and hill soil over the stems as they grow.
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 →