Albizia lebbeck Seeds | Woman’s Tongue Tree

Woman's Tongue Tree seeds (Albizia lebbeck)

LATIN NAME: Albizia lebbeck

COMMON NAME: Woman’s Tongue Tree, Siris

Plant Profile

Woman’s Tongue Tree (Albizia lebbeck) is a fast-growing deciduous tree of the pea family (Fabaceae), native to South Asia and Australia and planted throughout the tropics. It reaches 15-25 m, with bipinnate leaves, fragrant, greenish-yellow powderpuff flowers and broad, straw-coloured pods that rattle in the wind — the source of its curious name. It is a major tree for shade, fodder, fuelwood and reforestation in the dry tropics.

Science & Biotechnology

Within the Albizia group, Albizia lebbeck is of continuing interest to researchers working on plant diversity, seed biology and the selection of improved garden forms. Its tolerance of poor, saline and degraded soils has also made it a subject of reforestation research in regions facing significant land degradation. The practical point for growers is that this plant has been observed in gardens for so long that its behaviour holds few surprises.

Uses & Benefits

Beyond its ornamental appeal, Woman’s Tongue Tree has the practical versatility that makes a plant worth growing from seed year after year. Woman’s tongue tree serves a genuinely important dual role across much of tropical Asia and Africa, providing both shade and nitrogen-rich fodder for livestock, making it a valuable component of agroforestry systems on marginal farmland. Its wood is also used for general construction and furniture, and mature trees offer substantial, reliable shade in parks and along avenues across warm climates worldwide. Thereafter it wants only the ordinary attentions any garden plant receives.

The silk tree’s bark and flowers, He Huan Pi and He Huan Hua, are classic Chinese mood-calming herbs, traditionally used to ease restlessness and lift the spirits. Laboratory studies have examined their saponins and flavonoids for calming and neuroprotective activity.

Growing from Seed

Starting Woman’s Tongue Tree from seed is simple and satisfying. Nick or lightly sand hard seed coat and soak it in warm water overnight before sowing into a loose, free-draining tropical mix. Keep medium warm and consistently moist, provide bright light, and expect fast, vigorous growth from this adaptable, widely valued agroforestry tree. Broadcast the seed thinly over a fine, free-draining compost, sieve a little more compost on top, and water with a fine rose. Transplant the sturdiest seedlings to their permanent spots and let them develop without disturbance.

Our Take

Part of this plant’s appeal is the long practical history summarized above. Woman’s Tongue Tree, Siris settles in quickly once it finds its footing. From then on, routine care is all that is required.

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