How long does butternut squash take to grow?

Butternut Squash is ready to harvest in about 105 days, measured from planting.

When to Plant Butternut Squash

Plant butternut squash 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.

Butternut Squash 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

Aug 12

JJan

FFeb

MMar

AApr

MMay

JJun

JJul

AAug

SSep

OOct

NNov

DDec

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

Butternut Squash is ready to harvest in about 105 days. 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

1 variety of butternut squash in the HomeSown library. Tap any for its full grow guide.

Butternut Squash →

Common problems with butternut squash

What to watch for, with identification and treatment for each

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

🌱 Grow butternut squash 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 butternut squash in your zone

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