How long do zucchini take to grow?

Most zucchini mature in about 50 to 55 days depending on the variety, measured from planting.

When to Plant Zucchini

Plant zucchini by your frost dates, not the calendar: start seeds indoors about 3 weeks before your last spring frost, then plant outdoors about 2 weeks after your last frost. Pick your USDA zone below for exact dates.

Zucchini planting calendar

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Start seeds indoors

Mar 25

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Transplant outdoors

Apr 29

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Projected first harvest

Jun 23

JJan

FFeb

MMar

AApr

MMay

JJun

JJul

AAug

SSep

OOct

NNov

DDec

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a — approximate

Most zucchini mature in about 50 to 55 days depending on the variety. Dates above use zone 7 as a reference point. Pick your zone below, or set your ZIP in HomeSown for dates tuned to your exact location.

Varieties to grow

2 varieties of zucchini in the HomeSown library. Tap any for its full grow guide.

Black Beauty Zucchini →Costata Romanesco Zucchini →

Common problems with zucchini

What to watch for, with identification and treatment for each

Pickleworm Squash Bugs Squash Vine Borer Cucumber Beetles Seedcorn Maggot Groundhogs Gummy Stem Blight Papaya Ringspot Virus Angular Leaf Spot Blossom-End Rot Bacterial Wilt Blossom Drop

🌱 Grow zucchini with a calendar built for your exact yard

HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.

Start your free garden →

When to plant zucchini in your zone

Zone 3 →Zone 4 →Zone 5 →Zone 6 →Zone 7 →Zone 8 →Zone 9 →Zone 10 →