Cross Vine

bignonia capreolata

The Cross Vine (Bignonia capreolata) is a vigorous, climbing woody vine native to the southeastern United States. Renowned for its showy, trumpet-shaped flowers, this resilient plant scales trees, fences, and walls using specialized tendrils equipped with adhesive disks. In the wild, it forms dense cascades of color in spring, providing an early and crucial nectar source for hummingbirds and newly emerged insects. Its common name, Cross Vine, derives from the distinctive cross-shaped pattern visible in the transverse section of its woody stem. Highly adaptable, it thrives in a variety of light conditions from full sun to deep shade, making it both an ecological pioneer and a beloved ornamental plant in temperate gardens.

Habitat: Typically found in moist, alluvial woods, forested wetlands, and along riverbanks throughout the southeastern United States.

Appearance

This evergreen to semi-evergreen vine is instantly recognizable by its opposite, compound leaves consisting of two leaflets and a central, branched tendril. The flowers are stunning, bell-to-trumpet-shaped blossoms measuring 4 to 5 cm long, featuring a dramatic reddish-orange exterior with a bright yellow to orange interior. In late spring, they bloom in spectacular, dense clusters. The bark of older stems is grey-brown and flaky, and when cut horizontally, reveals a dark, four-armed cross structure of vascular tissue within the pale wood.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderLamialesFamilyBignoniaceaeGenusBignonia

Cross Vine

Interesting facts

Early pioneers and Native Americans occasionally used the vine's roots and bark to brew herbal teas believed to alleviate headaches and rheumatism.

If you slice the woody stem of a Cross Vine, you will see a perfect, natural cross pattern in the wood's vascular structure, which gave the plant its common name.

Unlike English Ivy, Cross Vine climbs using specialized adhesive disks at the end of its tendrils, meaning it can scale brick walls without damaging the mortar.

Special abilities

Its branching tendrils are equipped with tiny, sticky suction disks at their tips, allowing the vine to scale smooth vertical surfaces like tree bark or masonry without requiring external support.

The vine exhibits semi-evergreen behavior, retaining its dark, purplish-green leaves throughout mild winters, which allows it to photosynthesize during the cooler months when deciduous competitors are dormant.

The stem's internal wood is split into four distinct quadrants by vascular rays, a physical structure that provides flexibility against snapping during high winds.

Measurements & details

Length: 900-1500 cm
Lifespan: 10-30 years

Diet & Feeding

As a photosynthetic plant, the Cross Vine produces its own food by converting sunlight, water, and carbon dioxide into sugars, supplemented by minerals absorbed through its roots.

Age differences: Seedlings rely on nutrient reserves stored within the seed coat until they develop true leaves to begin photosynthesis.

Primary Foods

Sunlight
Carbon dioxide
Water
Soil nutrients

Foraging Method

Photosynthesis

Ecological connections

mutualism

Ruby-throated Hummingbird

Archilochus colubris

Hummingbirds feed on the nectar of the tubular flowers and act as primary pollinators.

mutualism

Eastern Tiger Swallowtail

Papilio glaucus

This butterfly feeds on the nectar of the flowers during spring.

eaten by

White-tailed Deer

Odocoileus virginianus

Deer occasionally browse the evergreen foliage of Cross Vine during the winter months.

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How long is Cross Vine?

900-1500 cm

How long does Cross Vine live?

10-30 years

What does Cross Vine eat?

As a photosynthetic plant, the Cross Vine produces its own food by converting sunlight, water, and carbon dioxide into sugars, supplemented by minerals absorbed through its roots.

Where is Cross Vine usually found?

Typically found in moist, alluvial woods, forested wetlands, and along riverbanks throughout the southeastern United States.

How does Cross Vine hunt?

Photosynthesis