VegetableSquash
Hubbard Baby Blue Squash
Hubbard Baby Blue Squash is a compact winter squash that brings the best qualities of its larger cousin into a more manageable package. Developed by the University of New Hampshire in the 1950s, this heirloom variety produces stunning powder-blue fruits with a distinctive teardrop or pear shape and vibrant orange flesh inside. You can harvest mature fruits in 100 to 109 days, and plants grow to just 24 to 30 inches tall, making them surprisingly practical for home gardens across hardiness zones 3 to 13. The combination of heritage genetics, striking appearance, and reliable productivity explains why this variety has endured for over 70 years.
Photo © True Leaf Market
Growing Conditions
USDA Zone
3-13
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained, Fertile Loam, Rich
Growth Stats
30 in
Height
Spacing
48
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
3-13
Size
30in H x ?in W
Growth
—
Care
High
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Highlights
The Hubbard Baby Blue proves that sometimes the most beautiful vegetables come from universities rather than wild ancestry. That powder-blue skin isn't just visually arresting; it signals a robust, long-storing winter squash with sweet orange flesh that actually tastes like something. At 24 to 30 inches tall and ready to harvest in around 100 days, it delivers all the substance of a full-sized Hubbard without the sprawling vines that swallow entire gardens. Open-pollinated and non-GMO, it's a variety you can save seeds from year after year.
Common Uses
Hubbard Baby Blue is grown primarily for winter storage and culinary use. The orange flesh roasts beautifully, lending itself to soups, gratins, and side dishes where its natural sweetness shines. Home gardeners value it especially for the ability to harvest and store multiple mature fruits from a single planting, providing a succession of meals through the fall and winter months.
Growing Timeline
No timeline data available yet for this variety.
Care Instructions
Direct Sow
Sow seeds directly into the garden after the last spring frost, when soil has warmed to at least 60 degrees Fahrenheit. Plant seeds 1 inch deep and 12 to 18 inches apart in rows spaced 48 inches apart, thinning seedlings to final spacing once they develop their first true leaves.
Harvesting
Harvest Hubbard Baby Blue squash when the skin has hardened to a deep powder-blue color and resists puncture from a fingernail, typically 100 to 109 days after sowing. Cut fruits from the vine using a sharp knife, leaving 2 to 3 inches of stem attached. The skin should feel hard and the color should be uniform across the entire fruit. Wait until the first light frost signals peak ripeness, as this concentrates sugars in the flesh.
Growing Calendar
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Companion Planting
Ecology & Traits
Edible
Scientific Classification
Cucurbita maxima
Family
Cucurbitaceae
Genus
Cucurbita
Native Status
L48 (I)PR (I)
History & Origin
“The Hubbard Baby Blue Squash emerged in the 1950s as a deliberate breeding project at the University of New Hampshire, designed to create a smaller, more garden-friendly version of the classic Blue Hubbard. Rather than simply being a chance discovery, this cultivar represents institutional plant science focused on solving a real problem: gardeners wanted the flavor and storage qualities of winter squash without dedicating half an acre to sprawling vines. Its successful development and propagation through seed catalogs secured its place as a true heirloom variety, preserved through open-pollinated seed saving for more than seven decades.”