South Carolina · zones 8a–9a
When to plant zucchini in South Carolina.
Sow between Apr 3 to Jul 17 in a typical year, keyed to South Carolina's median last frost around Mar 27. A second, fall sowing fits Jul 19 to Aug 7. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Zucchini dates for a typical South Carolina season.
Direct sow
Apr 3 to Jul 17
Keyed to the ~Mar 27 last frost. Sow 1" deep, 24" apart.
Fall round
Jul 19 to Aug 7
Counted back from the ~Nov 2 first frost.
Harvest
~50 days later
~8 lb per plant over ~5 weeks.
South Carolina spans more than one climate: Zone 8 is the most common zone, but the state runs 8a to 9a. 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.