Black Sedge (Carex nigra): A Common, Rhizomatous Sedge of Wet European Meadows

Black Sedge, Carex nigra, is a widespread, rhizomatous sedge native to wet meadows, bogs, and fens across Europe and northern Asia. Its dark, almost black flower spikes give it its common name.

Wetland Colonizer

This sedge forms loose, spreading colonies via long rhizomes. The leaves are narrow, gray-green. In late spring, it produces dense, cylindrical, dark purple-black spikes on triangular stems. It is a dominant species in many northern wetland communities.

Ecological Role

Carex nigra stabilizes wet soils, provides habitat, and is an indicator of wet, acidic conditions. In gardens, it can be used in bog gardens, pond margins, and wet meadow restorations. It spreads aggressively—site accordingly.