Zucchini plant

When to plant zucchini in zone 3b

In zone 3b, the last spring frost usually comes around May 15 and the first fall frost around Sep 15. Here is when to plant zucchini.

Sow in the bedMay 29
Start pickingJul 18

Your zucchini calendar for zone 3b

One or two plants feed a family. Pick when about 7 inches long.

Spacing in a raised bed: 1 plant per 2 × 2 ft.

These dates are estimates from the average frost dates for zone 3b. Your local frost dates may be a week or two different. If a late cold snap is forecast, wait a few days.

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Zucchini in other zones

See everything to plant in zone 3b →