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When to plant Zucchini in Zone 4a

In Zone 4a, Zucchini: direct sow outdoors around May 15–Jun 5. Expect to harvest around Jul 4–Jul 25.

StepWhen
Direct sow outdoorsMay 15 – Jun 5
HarvestJul 4 – Jul 25

Tip: Fast and prolific. A couple of plants feed a household — don't over-plant.

Zone 4a averages a last spring frost around May 15 and a first fall frost around Sep 18. These are zone averages — look up your ZIP for your exact area.

See the full Zone 4a calendar in the tool →

Other vegetables in Zone 4a

Zucchini in nearby zones