GreenlyWhen to plant zucchini in Charlotte
In Charlotte, zucchini: sow seedlings around 1 February for the greenhouse and around 22 February for open ground; plant into a greenhouse around 5 March; plant out into open ground around 26 March.
Last spring frost around 19 March, first autumn frost around 13 November. Frost-free days: 239 days.
The dates follow the Greenly calendar: open ground a week after the last frost once the soil is warm enough for the crop, frost-hardy crops three weeks before it, an unheated greenhouse three weeks earlier, seedlings sown so they are ready on the day. In a cold year allow a week or two more.