ExplorePlants

Hairy Cluster-Vine

jacquemontia tamnifolia

The Hairy Cluster-Vine (Jacquemontia tamnifolia) is a charming yet resilient annual vine belonging to the morning glory family, Convolvulaceae. Native to the southeastern United States, Central America, and parts of South America, this plant is famous for its striking, dense clusters of sky-blue to lavender flowers. It thrives in sunny, disturbed habitats, often sprawling across fields, climbing fences, or scaling neighboring plants. While gardeners and nature enthusiasts admire its delicate, funnel-shaped blooms, farmers often view it as a persistent weed because its tough, twining stems can easily entangle agricultural machinery during harvests. Despite its reputation in agriculture, the Hairy Cluster-Vine plays an important ecological role by providing nectar for a variety of native bees, butterflies, and other pollinators during the late summer months.

Habitat: Typically found in disturbed soils, agricultural fields, roadsides, and sandy coastal plains.

Appearance

This climbing or sprawling vine is easily recognized by its dense, head-like clusters of tiny, funnel-shaped flowers, which range from a brilliant sky-blue to violet-blue. Each cluster is surrounded by prominent, leaf-like bracts that are heavily covered in soft, spreading brownish-tawny hairs, giving the plant its namesake hairy appearance. The leaves are ovate to heart-shaped, measuring up to 10 cm in length, with pointed tips and smooth margins. The stems themselves are also densely hairy and can grow up to 4 meters long, winding tightly around any available support.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderSolanalesFamilyConvolvulaceaeGenusJacquemontia
Hairy Cluster-Vine
Hairy Cluster-Vine

Category

Plants

Rarity

Common

Danger

1/5 ยท Very low

Snaps

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Interesting facts

Despite being in the morning glory family, its flowers open in the morning and typically wilt by mid-afternoon of the same day.

It is considered a major weed in cotton and soybean fields in the southeastern United States because its tough, twining vines can easily tangle harvesting machinery.

Its species name, 'tamnifolia', means 'leaves like Tamnus' (a genus of climbing plants also known as black bryony).

Special abilities

Ability

Thigmotropic Twining

The vine's stems are highly sensitive to contact, allowing them to rapidly coil around vertical structures or neighboring plants to climb toward sunlight.

Ability

Hairy Armor

The dense coating of bristly, tawny hairs on the stems and floral bracts deters crawling insect herbivores and reduces water loss in hot, dry environments.

Ability

Synchronized Morning Bloom

Flowers open simultaneously in the early morning to capitalize on peak pollinator activity, closing and wilting by afternoon to conserve moisture.

Measurements & details

Length
100-400 cm
Weight
0.1-1 kg
Lifespan
1 years

Diet & Feeding

As a photoautotrophic plant, it generates its own energy through photosynthesis, utilizing sunlight, water, and carbon dioxide.

Primary Foods

  • Sunlight
  • Water
  • Carbon dioxide
  • Soil nutrients

Ecological connections

mutualism

Honey Bee

Apis mellifera

Visits the bright blue flowers to forage for nectar and pollen, aiding in pollination.

eaten by

Sweetpotato Leafminer

Bedellia somnulentella

The larvae of this moth mine the leaves of the plant, feeding on the inner tissues.

Traits

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Also known as

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Safety

Danger

1/5 ยท Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Hairy Cluster-Vine?

The easiest way to identify Hairy Cluster-Vine is to use the Snappit nature identifier app.

How long is Hairy Cluster-Vine?

100-400 cm

How much does Hairy Cluster-Vine weigh?

0.1-1 kg

How long does Hairy Cluster-Vine live?

1 years

What does Hairy Cluster-Vine eat?

As a photoautotrophic plant, it generates its own energy through photosynthesis, utilizing sunlight, water, and carbon dioxide.

Where is Hairy Cluster-Vine usually found?

Typically found in disturbed soils, agricultural fields, roadsides, and sandy coastal plains.

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