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Winter squash

How to identify Winter squash (Cucurbita maxima)

Winter squash, also known as Buttercup Squash, Pumpkin, Turban Gourd, Turban squash, Great Pumpkin

Winter squash is characterized by its sprawling vine which supports large, lobed leaves and tendrils. The foliage is often coarse and hairy, adding to its distinct texture. The plant is known for its impressively sized fruits, which have a hard, thick rind varying in color from deep green to orange. These fruits can reach sizes of up to several feet in diameter and weigh in multiples of pounds (kilograms). The flowers are typically large and yellow, contributing to the visual appeal of winter squash.

Lifespan

Lifespan: Annual

Plant Type

Plant Type: Vine, Herb

Leaf Type

Leaf Type: Deciduous

Quickly Identify Winter squash

1

Large, lobed leaves with rough texture.

2

Impressively sized fruits, reaching several feet in diameter.

3

Large, pale to deep yellow flowers with trumpet-like appearance.

4

Fleshy berries ranging from green to orange, with varying shapes.

5

Robust, dark green stem with pronounced longitudinal ribs.

Winter squashWinter squashWinter squashWinter squashWinter squash

Detailed Traits of Winter squash

Leaf Features

The leaves of winter squash are large, simple, and characterized by a rough and prickly texture. They exhibit an alternate arrangement with palmate lobing and venation, often displaying only shallow lobing. The broad leaves can grow up to 1-2 feet (30-60 cm) in width. They feature a vibrant green color, which may vary slightly depending on the growing conditions and age of the plant.

Leaf Shape

Reniform

Winter squash Leaf Shape image
Leaf Margin

Entire

Winter squash Leaf Margin image
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Flower Features

The flowers of winter squash are large and range from pale to deep yellow. They are monecious, with separate male and female flowers on the same plant. The blossoms have a funnel shape, with five fused petals creating a prominent, trumpet-like appearance. Male flowers typically measure around 4 inches (10 cm) in diameter, while female flowers are slightly smaller. Both types of flowers bloom prolifically during the summer, lacking a notable scent but attracting various pollinators.

Winter squash Flower imageWinter squash Flower image
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Stem Features

The stem of winter squash is robust and dark green in color. It is cylindrical and ridged, measuring up to 3 inches (7.5 cm) in diameter. The texture is slightly rough with pronounced longitudinal ribs. The stems are hollow, fleshy, and typically branch close to the base, forming a sprawling growth habit. Their strong, fibrous nature supports the plant's vigorous growth and heavy fruit production. Small, coarse hairs are often present, contributing to the stem's rough texture.

Winter squash Stem image
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Fruit Features

The fruit of winter squash is a large, fleshy berry known as a pepo. These fruits exhibit a spectrum of colors ranging from green to yellow to orange, and they take on various shapes from spherical to elongated. They characteristically range in size, commonly achieving dimensions of up to 3 feet (91 cm) in diameter, weighing several pounds to potentially over 100 pounds (45 kg). The outer rind may be smooth or patterned with stripes or mottled spots, transitioning from soft when young to a tough, hardened exterior upon maturation. The stem is distinctly spongy and cork-like, making it less rigid than those of related species. Inside, the flesh is typically orange, dense, and encases a central cavity filled with flat, cream-colored seeds.

Winter squash Fruit imageWinter squash Fruit image
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Key Facts About Winter squash

Attributes of Winter squash
Lifespan
Annual
Plant Type
Vine, Herb
Plant Height
60 cm
Spread
5 m
Leaf Color
Green
Flower Size
8 cm to 15 cm
Flower Color
Yellow
Gold
Fruit Color
Red
Green
Orange
Blue
Gold
White
Pink
Cream
Stem Color
Green
Leaf type
Deciduous
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Scientific Classification of Winter squash

Family
Gourd
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Species
Winter squash (Cucurbita maxima)
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Distribution Map of Winter squash

Winter squash is native to South America, where it was cultivated as an important crop so long ago that the species' original habitat is uncertain. This popular food is now grown globally and has naturalized in scattered nations around the world.
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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