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Growing zucchini: from seed to harvest

Sow summer squash a week after last frost. One or two plants feed a family, pick young and often.

Type: VegetablesSun: Full sunWater: High waterDays to maturity: 55Spacing: 24"Hardiness: Tender

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Planting dates for zucchini by zone

Planting dates for zucchini by zone
ZoneStart seeds indoorsSow or transplantHarvest
Zone 3not neededMay 22July 16
Zone 4not neededMay 17July 11
Zone 5not neededMay 7July 1
Zone 6not neededApril 28June 22
Zone 7not neededApril 17June 11
Zone 8not neededApril 4May 29
Zone 9not neededMarch 8May 2
Zone 10not neededFebruary 7April 3
Zone 11not neededJanuary 8March 4

These dates use typical frost dates for each zone. Dibble tunes them to your exact ZIP and lets you adjust frost dates for your own yard.

Companion plants

Good neighbors for Zucchini:

Bean (bush)Sweet CornMarigoldNasturtium

Better kept apart:

Potato

Family and rotation

Zucchini is in the cucurbits family. Sprawling heavy feeders. Rotate away from where squash family grew last year. Learn about crop rotation.

Related crops

Questions

When should I plant zucchini?

It depends on your zone. Zucchini is a tender crop, so the timing follows your last spring frost. Look up your zone in the table below for exact start, sow, and harvest dates, or open Dibble and enter your ZIP to get your own calendar.

How long does it take to grow zucchini?

About 55 days from sowing to the first harvest, with a picking window of roughly 42 days after that.

What grows well with zucchini?

Good companions include Bean (bush), Sweet Corn, Marigold, Nasturtium. Keep it away from Potato.


Plant at the right time this season

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