Carex clavata, commonly known as Swamp Sedge, is an evergreen perennial grass native to wetlands, including marshes, fens, and peat bogs, primarily in the Cape Province region of South Africa. It typically grows to a height of 12-24 inches (30-60 cm) with a similar spread, forming dense clumps of narrow, arching leaves. The plant produces inconspicuous brown flower spikes in late spring to early summer, which are more interesting for their texture than for showy color.

Swamp Sedge is valued for its ability to thrive in wet conditions and is often used in rain gardens, water features, and as a ground cover in damp areas of the landscape. It is also suitable for erosion control on streambanks and slopes. Carex clavata requires consistently moist to wet soil and can tolerate occasional flooding. It is adaptable to a range of soil types, provided they are well-draining. While it prefers full sun to part shade, it can also grow in shadier conditions. Gardeners should be aware that in some conditions, it can spread vigorously and may require management to prevent it from becoming invasive.CC BY-SA 4.0