Vachellia robusta (Burch.) Kyal. & Boatwr.

broad-pod robust-thorn, splendid acacia

Afr

brakdoring, brosdoring, pragdoring, enkeldoring

isiZulu

umnqawe, umngamanzi

IsiXhosa

Description

Family:

Fabaceae

Order:

Fabales

Description

Vachellia robusta is a fast-growing, deciduous tree up to 10 meters tall, with a single trunk, high branching, and a somewhat irregular, spreading, dense crown. The bark is grey to blackish and rough, with straight, paired white thorns. Leaves are dark green and glossy. Creamy white, strongly scented pompon flowers appear from July to October, followed by broad, straight, greyish-brown seed pods. The tree is common in warm, dry savannas and woodlands, often near streams.

Plant Details

Height

Up to 10 meters

Thorns

Straight, paired, white

Soil

Prefers well-drained soils; adaptable to various types

Fast; up to 1 meter per year

Growth Rate

Up to 10 meters

Size

Several decades

Lifespan

Flower Colour

Flowering Season

, , ,

Horticultural Zones

Neutral to slightly acidic

pH

Prefers well-drained soils; adaptable to various types

Soil

Full sun

Aspect

Resistant

Frost Tolerance

High

Drought Resistance

Companion Plants

Suitable for mixed savanna and woodland plantings.

Caterpillars

Host to beetle larvae and other insect herbivores; supports Lepidoptera and pollinator insects.

Associations

Descriptions

Leaves are browsed by kudu and other mammals. Flowers attract bees, butterflies, and many insects. Seed pods and leaves are eaten by herbivores and distributed in their dung. Seeds are parasitized by Bruchid beetle larvae, which are then eaten by birds. Birds such as sparrows and finches nest in the thorny branches, protected from predators. The tree fixes nitrogen through symbiosis with Rhizobium bacteria, enriching the soil.

Flowers and fruits

Creamy white, strongly scented pompon flowers; broad, straight pods; seeds parasitized by beetle larvae.

Birds

Provides nesting sites for sparrows, finches, and other birds; birds feed on beetle larvae in pods.

By Seeds:

Sow fresh seeds in sandy soil; germinates readily.

By Cuttings:

Not commonly used; seed propagation preferred.

Traditional Uses

Bark exudes gum consumed by monkeys and baboons; wood used for fuel and tools.
Leaves and pods browsed by livestock and wild herbivores.
Not known to be toxic.
Excellent for soil stabilization, erosion control, nitrogen enrichment, and supporting biodiversity in restoration projects.

Plant Details

Height

Description

Thorns

Description

Leaves

Description

Size

Growth Form

Size

Size

Size

Lifespan

Size

Flower Colour

Size

Flowering Season

Size

Horticultural Zones

Size

pH

Size

Soil

Size

Aspect

Size

Frost Tolerance

Size

Drought Resistance

Description

DESCRIPTION

Height

DESCRIPTION

Leaves

DESCRIPTION

Thorns

DESCRIPTION

BSS

Ecoscore

Host plant Nectar Grazing

Link to PlantzAfrica.co.za

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Distribution

Companion Plants

Description

Caterpillars

Associations

Leaves

Leaves

Flowers and fruits

Leaves

Birds

Leaves

Mammals

Leaves

By Seeds:

Leaves

By Cuttings:

Leaves

Traditional Uses

traditional uses