Albizia versicolor – Variegated Albizia
Albizia versicolor, variegated albizia, is a magnificent African tree from the legume family (Fabaceae), known for its wide, spreading crown and fluffy, creamy flowers. The epithet "variegated" refers to the changing color of its foliage. This beautiful tree provides shade and is beneficial for insects, but its pods are toxic to cattle.
Synonyms and nomenclature
The species was described by Welw. ex Oliv. (1871). The Kew POWO database lists several synonyms for it, including:
- Feuilleea versicolor (Welw. ex Oliv.) Kuntze
- Albizia mossambicensis Sim
- Albizia versicolor var. mossambicensis Schinz
In English, the plant is known as "poison-pod albizia," "large-leaved false-thorn," and "large-leaved albizia," in Afrikaans as "grootblaarvalsdoring," and in African languages as umvangazi and mkenge; the Polish name is albicja różnobarwna. The species name versicolor means "variegated."
Origin and appearance
The species originates from tropical and southern Africa – from Congo and Kenya to South Africa (KwaZulu-Natal, Limpopo, Mpumalanga), where it grows in open forests, bush, and wooded savannas, often near water, up to about 1700 m. It is a medium to large deciduous tree, usually 8–10 m tall (up to 20 m), with a straight trunk and a flat to rounded, spreading crown, sometimes twice as wide as the tree's height.
The leaves are large, bipinnate, with 1–3 (up to 5) pairs of leaflets, each with 2–5 pairs of relatively large, velvety hairy leaflets up to 70 × 50 mm. Young leaves are silky and pinkish-red, mature ones glossy olive green, turning yellow in autumn. The flowers are delicately scented, in hemispherical heads, creamy white turning pinkish-yellow, with a fluffy appearance created by white stamens up to 7 cm long. The fruit is a flat, thin, papery pod up to 23–27 cm long, containing about six flattened seeds.
Frost resistance and cultivation
Albizia versicolor is a warm-loving, frost-sensitive tree (USDA zones 10–11), tolerating only light frosts. In temperate climates, it is grown in a pot, in full sun, protected from frost. It prefers well-drained, sandy to clayey soils and, once established, is drought-resistant, though it enjoys proximity to water. As a leguminous plant, it fixes nitrogen and enriches the soil without developing an invasive root system.
Cultivation from seeds
Fresh seeds require no treatment – just sow them (they germinate about 80–90% within 30 days). Stored seeds with hardened coats are soaked in hot water overnight and sown the next day. Sow in summer in a mix of river sand and compost. It’s best to collect pods from the tree rather than the ground, as fallen seeds can be infested by insects. This is an easy cultivation – high and fast germination without the need for stratification.
Uses and safety
This attractive ornamental and shade tree is suitable for large gardens and parks, attracting bees, birds, and butterflies; its hard, termite-resistant wood is sometimes used in carpentry. Important safety note: pods and seeds are toxic to livestock (hence the name “poison-pod albizia”), with young pods being the most toxic – causing a disease called albiziosis in cattle, sheep, and goats. Seeds should be kept away from animals and children.
Interesting facts
The epithet versicolor (“variegated”) refers to the plant’s changing colors – young leaves are pinkish-red, mature ones olive-green, and in autumn they turn yellow, while the pods shift from green-red to light brown. Although the pods are toxic to cattle, parrots crack and eat the seeds, and elephants and kudus readily browse the leaves.
Summary
Albizia versicolor is a beautiful, spreading tree with colorful foliage and fluffy flowers, easy to grow from seed and enriching the soil with nitrogen. It is a charming collector’s and ornamental species – just remember its frost sensitivity and the toxicity of its pods to animals.
