Brachylaena rotundata

Brachylaena rotundata S.Moore

Mountain Silver-oak, Transvaal Silver-tree

Afr

Bergvaalbos, Bergvaalboom

isiZulu

IsiXhosa

Description

Family:

Asteraceae

Order:

Asterales

Description

Brachylaena rotundata is a hardy, medium-sized, semi-deciduous to deciduous tree or large shrub with slender, drooping branches and corky bark.

The foliage is leathery, silver-grey, and covered with cobwebby hairs when young, turning reddish in autumn.

It produces yellow, thistle-like flowers from late winter to spring.  The species is dioecious, with male and female flowers on separate trees.

It is drought-resistant and well-suited to rocky hillsides, open woodland, and stream banks.

Plant Details

Height

3 - 8 m (occasionally up to 8 m in natural habitat)

Thorns

None

Soil

Well-drained, sandy or rocky soils; tolerates poor soils

Medium

Growth Rate

3 - 8 m (occasionally up to 8 m in natural habitat)

Size

Several decades; long-lived in suitable conditions

Lifespan

Flower Colour

Flowering Season

, , , ,

Horticultural Zones

Neutral to slightly acidic

pH

Well-drained, sandy or rocky soils; tolerates poor soils

Soil

Full sun to semi-shade

Aspect

High

Frost Tolerance

High

Drought Resistance

Companion Plants

Pairs well with other drought-tolerant bushveld species and rocky slope flora.

Caterpillars

Moths: Phyllonorycter brachylaenae and Ludia delegorguei

Associations

Descriptions

Insects: The yellow flowers attract bees and other pollinators with abundant nectar.

Wildlife: Young leaves are browsed by game, while mature leaves are bitter.

The tree provides shelter and nesting sites for birds and insects.

Its dense foliage offers protection for small animals and helps stabilize soil in rocky habitats.

Flowers and fruits

Male and female flowers on separate trees; yellow, thistle-like flower heads in late winter to spring.

Fruits are wind-dispersed cypselas with tufts of bristles.

Birds

Provides nesting sites and shelter; attracts insectivorous birds due to insect activity around flowers.

By Seeds:

Sow fresh seeds in sandy, well-drained soil; germination is reliable.

By Cuttings:

Semi-hardwood cuttings can be rooted with hormone treatment.

Traditional Uses

Traditional Uses: Wood used for fence posts and tool handles.

Livestock: Young leaves browsed by game and livestock, especially during drought.

Ecological uses: Excellent for soil stabilization, windbreaks, and increasing biodiversity in degraded or rocky areas.

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

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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