Plant Zucchini in Zone 3b
Seed-starting, transplant & harvest dates for USDA Zone 3b
Start indoors
Apr 22
Transplant
May 27
Direct sow
May 27
Harvest (~55d)
Jul 21
In Zone 3b, the average last spring frost is around May. Zucchini is a tender crop, so give it a head start indoors about 3 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 Zucchini grow guide → · All crops for Zone 3b →
Frequently asked questions
When should I start zucchini in Zone 3b?
Start zucchini seeds indoors around Apr 22 (Zone 3b).
Can I direct sow zucchini in Zone 3b?
Yes, direct sow around May 27.