When to plant Potato in Zone 3b
In Zone 3b, Potato: direct sow outdoors around May 6–Jun 3. Expect to harvest around Aug 4–Sep 1.
| Step | When |
|---|---|
| Direct sow outdoors | May 6 – Jun 3 |
| Harvest | Aug 4 – Sep 1 |
Tip: Plant seed potatoes around the last frost and hill soil over the stems as they grow.
Zone 3b averages a last spring frost around May 20 and a first fall frost around Sep 12. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3b calendar in the tool →