Plant Squash (winter) in Zone 3a
Seed-starting, transplant & harvest dates for USDA Zone 3a
Start indoors
Apr 24
Transplant
May 29
Direct sow
May 29
Harvest (~95d)
Sep 1
In Zone 3a, the average last spring frost is around May. Squash (winter) 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 15
First fall frost
Sep 15
Growing season
123 days
Full Squash (winter) grow guide → · All crops for Zone 3a →
Frequently asked questions
When should I start squash (winter) in Zone 3a?
Start squash (winter) seeds indoors around Apr 24 (Zone 3a).
Can I direct sow squash (winter) in Zone 3a?
Yes, direct sow around May 29.