Melaleuca decussata, commonly known as Totem-poles, is a species of flowering plant in the myrtle family, Myrtaceae, native to southeastern Australia. This evergreen shrub or small tree is recognized for its distinctive upright growth habit and attractive foliage, making it a notable component of its natural ecosystems and a subject of horticultural interest. The physical characteristics of Melaleuca decussata are key to its identification. It typically grows as a dense shrub or a slender tree, reaching heights of up to 6 meters, though it can occasionally grow taller. Its growth habit is often described as columnar or erect, contributing to its common name. The leaves are arranged oppositely along the stems, a characteristic feature that distinguishes it from many other Melaleuca species. These leaves are ovate to elliptic in shape, measuring approximately 1 to 2.5 centimeters in length and 0.5 to 1 centimeter in width. They are typically a deep green color and possess a somewhat leathery texture. During its flowering season, Melaleuca decussata produces showy inflorescences composed of numerous small, fluffy flower heads. Each flower head contains many stamens, which are typically white or cream-colored, giving the flower clusters a brush-like appearance. These flowers are borne in the leaf axils, often in dense clusters. Following flowering, small, woody capsules develop, containing numerous small seeds. The bark is papery and often peels in thin layers, a common trait among many Melaleuca species. Melaleuca decussata is naturally distributed across parts of South Australia, Victoria, and Tasmania. It thrives in a variety of habitats, often found in mallee scrub, woodlands, and along the margins of swamps and ephemeral wetlands. It prefers well-drained soils but can tolerate a range of soil types, including sandy and clay loams. While it can endure periods of inundation, prolonged waterlogging is generally not favored. In cultivation, it is adaptable to various conditions, performing best in full sun to partial shade. It is known to be reasonably drought-tolerant once established and can withstand light frosts. Its adaptability makes it a suitable choice for a range of garden settings, particularly where a screening plant or a specimen with an upright form is desired. Ecologically, Melaleuca decussata plays a role in its native environment by providing habitat and food sources for local fauna. The flowers attract pollinators such as bees and other insects, and potentially birds. While not widely cultivated for specific economic purposes, its ornamental value is recognized. Its dense foliage and upright form make it an effective screen or hedge plant. The species is also valued for its resilience and low maintenance requirements in suitable climates. An interesting characteristic of Melaleuca decussata is the arrangement of its leaves, which are decussate, meaning they occur in pairs at right angles to the pairs above and below. This specific phyllotaxy contributes to the plant's dense appearance and is a key diagnostic feature. The species' ability to thrive in coastal and sometimes saline environments further highlights its ecological significance and adaptability.