Tennessee · zones 7a–8a
When to plant zucchini in Tennessee.
Sow between Apr 15 to Jul 29 in a typical year, keyed to Tennessee's median last frost around Apr 8. A second, fall sowing fits Jul 11 to Jul 30. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Zucchini dates for a typical Tennessee season.
Direct sow
Apr 15 to Jul 29
Keyed to the ~Apr 8 last frost. Sow 1" deep, 24" apart.
Fall round
Jul 11 to Jul 30
Counted back from the ~Oct 25 first frost.
Harvest
~50 days later
~8 lb per plant over ~5 weeks.
Tennessee spans more than one climate: Zone 7 is the most common zone, but the state runs 7a to 8a. 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.