Carex appressa, commonly known as Tall Sedge, is a densely tufted perennial herb that is native to wetlands and riparian zones in Australia, New Zealand, and the South West Pacific. It forms clumps up to 20 inches in diameter, with erect, triangular stems that can reach around 39 inches in height. The leaves are long, narrow, and have rough margins. Tall Sedge is characterized by its brownish, spike-like inflorescence composed of 20 or more spikes, which are most prominent during its flowering season in spring and summer. The flowers are not particularly showy but are of ecological importance.

Tall Sedge is valued for its ability to stabilize soil and its use in water-sensitive urban design, including rain gardens and wetland restoration. It thrives in full sun to part shade and prefers moist to wet soils with good drainage. In cultivation, it is often used for erosion control, as a water feature plant, or in mass plantings for a naturalistic look. It is relatively low-maintenance but may require division every few years to manage its spread. While it is not known for serious disease or pest problems, it can become invasive if conditions allow for unchecked growth.CC BY-SA 4.0