Plant Broccoli in Zone 3b
Seed-starting, transplant & harvest dates for USDA Zone 3b
Start indoors
Apr 1
Transplant
Apr 29
Harvest (~65d)
Jul 3
In Zone 3b, the average last spring frost is around May. Broccoli is a half-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 Broccoli grow guide → · All crops for Zone 3b →
Frequently asked questions
When should I start broccoli in Zone 3b?
Start broccoli seeds indoors around Apr 1 (Zone 3b).
Can I direct sow broccoli in Zone 3b?
Broccoli is best started indoors and transplanted in Zone 3b rather than direct sown.