Overview
Melaleuca leucadendra, commonly called the weeping paperbark or cajuput tree, is a member of the myrtle family (Myrtaceae). It is valued for its striking pale, peeling bark, glossy aromatic leaves and clustered creamy flower spikes. The species name refers to its pale or "white tree" appearance. For a general species page see weeping paperbark and for genus information see Melaleuca.
Description and identification
Melaleuca leucadendra is an erect tree that often develops a graceful, slightly pendulous crown. Its bark is thin, papery and pale—peeling in sheets or strips to reveal fresh layers beneath. Leaves are alternate, lance-shaped, bright green and release a strong, camphor-like scent when crushed. Florets are arranged in dense, brush-like clusters that are usually creamy white; these are followed by small, woody seed capsules arrayed along the stems.
- Growth form: medium to large tree with softly drooping branches (weeping habit).
- Bark: pale, paper-like, peeling.
- Leaves: aromatic, lanceolate, bright green.
- Flowers: cream to white bottlebrush-like spikes.
- Fruits: persistent woody capsules.
Distribution and habitat
The species is native to the northern regions of Australia and nearby islands. Within Australia it occurs in the tropical north including Western Australia, the Northern Territory and Queensland, and it also grows naturally in New Guinea (New Guinea) and parts of the Solomon Islands (Solomon Islands). It typically occupies wet sites such as riverbanks, seasonal swamps, coastal flats and other areas with high soil moisture, tolerating occasional inundation and saline conditions.
Uses and cultural significance
Melaleuca leucadendra has multiple uses. The leaves yield an essential oil commonly called cajuput or cajeput oil, a traditional remedy and commercial product distilled from foliage. This oil contains volatile compounds—principally 1,8‑cineole (eucalyptol)—and has been used as a topical antiseptic, inhalant and in traditional medicine. Indigenous peoples in Australia and communities in Southeast Asia and the Pacific have historically used the tree's bark for shelter, wrapping and other purposes.
- Essential oil production (cajuput oil).
- Ornamental and shade tree in urban plantings and parks.
- Habitat and nectar source for birds, insects and bees.
- Bark and foliage used in traditional crafts and remedies.
Ecology, cultivation and management
The species grows rapidly in moist, well-lit sites and withstands periodic flooding and light saline exposure. It flowers prolifically and attracts pollinators, making it useful for revegetation of wetland margins and as a nectar source. Because of its vigorous growth and adaptability, it is widely planted beyond its natural range, where it should be managed carefully to avoid unintended spread. In cultivation it prefers full sun and ample moisture; pruning can maintain form and reduce litter from peeling bark.
Similar species and notable distinctions
Melaleuca leucadendra is often compared with broad-leaf paperbark (for example Melaleuca quinquenervia), but differs by its brighter green foliage, more pendulous branchlets and thinner, less spongy bark. The common name "cajuput" derives from the Malay phrase kayu putih meaning "white wood," reflecting the pale bark and the traditional source of cajuput oil. Additional general resources and regional treatments are available at northern Australia flora and other botanical references (species notes, genus summary). For conservation, cultivation or extraction practices consult local guidelines (WA, NT, QLD, Solomon Is., New Guinea).
For practical information on planting, oil distillation and ecological effects see linked resources and regional authorities: tree form and habit, ethnobotany and name origin, and further online summaries at Melaleuca genus.