Connecticut · zones 6a–7a
When to plant spinach in Connecticut.
Sow between Mar 1 to Apr 12 in a typical year, keyed to Connecticut's median last frost around Apr 22. A second, fall sowing fits Jul 29 to Sep 16. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Spinach dates for a typical Connecticut season.
Direct sow
Mar 1 to Apr 12
Keyed to the ~Apr 22 last frost. Sow 0.5" deep, 3" apart.
Fall round
Jul 29 to Sep 16
Counted back from the ~Oct 12 first frost.
Harvest
~42 days later
~0.25 lb per plant over ~1 weeks.
Connecticut spans more than one climate: Zone 6 is the most common zone, but the state runs 6a to 7a. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.