Plant Zucchini in Zone 4a
Seed-starting, transplant & harvest dates for USDA Zone 4a
Start indoors
Apr 19
Transplant
May 24
Direct sow
May 24
Harvest (~55d)
Jul 18
In Zone 4a, 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 10
First fall frost
Sep 22
Growing season
135 days
Full Zucchini grow guide → · All crops for Zone 4a →
Frequently asked questions
When should I start zucchini in Zone 4a?
Start zucchini seeds indoors around Apr 19 (Zone 4a).
Can I direct sow zucchini in Zone 4a?
Yes, direct sow around May 24.