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When to Plant Squash (Winter) in Hawaii

Winter squash includes butternut, acorn, delicata, and hubbard varieties grown to full maturity with hard rinds for storage. They develop sweet, dense flesh.

Hawaii spans USDA hardiness zones 11a, 11b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

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Click your county for exact Squash (Winter) planting dates based on your local frost dates.

Hover over a county to see details. Click to view planting guide.

Squash (Winter) Planting Calendar for Hawaii

Zone 11a ~364 day growing season · Full guide →

Last frost: January 1 · First frost: December 31 · 364 day season

Activity When Date Range
Start Indoors December 4 Dec 4 – Dec 18
Transplant Outdoors January 8 Jan 8 – Jan 22
Direct Sow January 1 Jan 1 – Jan 22
Harvest April 2 Apr 2 – May 28
Zone 11b ~364 day growing season · Full guide →

Last frost: January 1 · First frost: December 31 · 364 day season

Activity When Date Range
Start Indoors December 4 Dec 4 – Dec 18
Transplant Outdoors January 8 Jan 8 – Jan 22
Direct Sow January 1 Jan 1 – Jan 22
Harvest April 2 Apr 2 – May 28

Growing Tips for Hawaii

Direct sow after last frost on rich mounds. Allow ample space for sprawling vines. Cure harvested fruits in the sun for 10 days before storing in a cool, dry place.

Frequently Asked Questions

When should I plant Squash (Winter) in Hawaii?

Planting dates for Squash (Winter) in Hawaii depend on your USDA zone. Hawaii spans zones 11a, 11b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Hawaii for planting?

Hawaii contains USDA hardiness zones 11a, 11b. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.