Hypocalymma robustum, commonly known as Swan River Myrtle, is a perennial shrub native to the sandy soils and coastal heathlands of southwestern Australia. It typically grows to a height of 0.4 to 1 meter and is characterized by its bushy form and dense foliage. The plant produces clusters of small, pink, and sometimes white flowers from June to November, which correspond to early winter through late spring in its native range. These flowers are highly ornamental and add a splash of color to the garden landscape during their blooming period.

Swan River Myrtle is valued for its attractive flowers and compact size, making it an excellent choice for small gardens, rockeries, and as a container plant. It is also used in urban planting and border planting due to its manageable size and ornamental flowers. In cultivation, it requires well-drained soils and thrives in full sun to partial shade. While it has moderate frost resistance, it prefers a Mediterranean climate with dry summers. Regular pruning can help maintain its shape and encourage more prolific flowering. Gardeners should be aware that it may not tolerate prolonged wet conditions, which can lead to root rot.CC BY-SA 4.0