Plant Kale in Zone 3b
Seed-starting, transplant & harvest dates for USDA Zone 3b
Start indoors
Apr 1
Transplant
Apr 29
Direct sow
Apr 22
Harvest (~60d)
Jun 28
In Zone 3b, the average last spring frost is around May. Kale is a hardy crop, so give it a head start indoors about 6 weeks before that, then move it out after frost danger passes.
Last spring frost
May 13
First fall frost
Sep 18
Growing season
128 days
Full Kale grow guide → · All crops for Zone 3b →
Frequently asked questions
When should I start kale in Zone 3b?
Start kale seeds indoors around Apr 1 (Zone 3b).
Can I direct sow kale in Zone 3b?
Yes, direct sow around Apr 22.