Plant Spinach in Zone 4a
Seed-starting, transplant & harvest dates for USDA Zone 4a
Direct sow
Apr 5
Harvest (~45d)
May 20
In Zone 4a, the average last spring frost is around May. Spinach is a hardy crop, so sow it directly around the dates above.
Last spring frost
May 10
First fall frost
Sep 22
Growing season
135 days
Full Spinach grow guide → · All crops for Zone 4a →
Frequently asked questions
When should I start spinach in Zone 4a?
Direct sow outdoors around Apr 5.
Can I direct sow spinach in Zone 4a?
Yes, direct sow around Apr 5.