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Plant Corn in Zone 3b

Seed-starting, transplant & harvest dates for USDA Zone 3b

Direct sow
May 20
Harvest (~75d)
Aug 3

In Zone 3b, the average last spring frost is around May. Corn is a tender crop, so sow it directly around the dates above.

Last spring frost
May 13
First fall frost
Sep 18
Growing season
128 days

Full Corn grow guide → · All crops for Zone 3b →

Frequently asked questions

When should I start corn in Zone 3b?

Direct sow outdoors around May 20.

Can I direct sow corn in Zone 3b?

Yes, direct sow around May 20.