4b When to plant potatoes in zone 4b
Zone 4b median last spring freeze: May 12 · first fall freeze: Sep 27 · harvest in ~90-120 days.
| Step | Zone 4b dates | Note |
|---|---|---|
| Direct sow (spring) | Apr 28 | before last spring freeze |
How potatoes grow in zone 4b
Direct sow — these seeds go straight in the ground. Half-hardy — tolerates light frost. Harvest runs roughly 90-120 days after planting. These windows come from extension planting tables anchored to zone 4b's median freeze dates — for varieties and local conditions, check with your local extension office.
Next: the full zone 4b calendar · other crops in zone 4b: tomatoes · peppers · cucumbers · zucchini & summer squash · winter squash & pumpkins · snap beans · sweet corn · peas · lettuce · 5 more