Plant Broccoli in Zone 5b
Seed-starting, transplant & harvest dates for USDA Zone 5b
Start indoors
Mar 14
Transplant
Apr 11
Harvest (~65d)
Jun 15
In Zone 5b, the average last spring frost is around April. 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
Apr 25
First fall frost
Oct 8
Growing season
166 days
Full Broccoli grow guide → · All crops for Zone 5b →
Frequently asked questions
When should I start broccoli in Zone 5b?
Start broccoli seeds indoors around Mar 14 (Zone 5b).
Can I direct sow broccoli in Zone 5b?
Broccoli is best started indoors and transplanted in Zone 5b rather than direct sown.