Acacia cochlearis, commonly known as Rigid Wattle, is a shrub native to coastal dunes and limestone areas of Southwestern Australia. It is a member of the genus Acacia within the subgenus Plurinerves. This bushy, erect, and pungent shrub typically grows to a height of 0.5 to 3 meters (2 to 10 ft). The Rigid Wattle blooms from July to October in its native habitat, producing spherical yellow flower heads that are quite showy. Following the flowering season, it bears seed pods that are approximately 50 mm (2.0 in) long, each containing 10 to 15 mostly viable black seeds.

The Rigid Wattle is valued for its ability to stabilize sandy soils and is often used in coastal and dune stabilization projects. It is also appreciated in gardens for its medium size and adaptability to coastal conditions. The shrub establishes quickly in stabilized soils but requires protection from high winds. It can be propagated from seed, which should be treated with hot water or scarified with fine sandpaper to enhance germination. Sowing should be done in free-draining soil under full sun. In cultivation, it prefers full sun to part shade, moderate watering, and well-draining soils. While it is not known for major diseases, it can be potentially invasive when grown outside its native range, so gardeners should check local regulations before planting.CC BY-SA 4.0