Plant Potatoes in Zone 4b
Seed-starting, transplant & harvest dates for USDA Zone 4b
Direct sow
Apr 21
Harvest (~90d)
Jul 20
In Zone 4b, the average last spring frost is around May. Potatoes is a half-hardy crop, so sow it directly around the dates above.
Last spring frost
May 5
First fall frost
Sep 28
Growing season
146 days
Full Potatoes grow guide → · All crops for Zone 4b →
Frequently asked questions
When should I start potatoes in Zone 4b?
Direct sow outdoors around Apr 21.
Can I direct sow potatoes in Zone 4b?
Yes, direct sow around Apr 21.