''Scirpus atrovirens'', known as dark-green bulrush, is a perennial

sedge The Cyperaceae () are a family of graminoid (grass-like), monocotyledonous flowering plants known as wikt:sedge, sedges. The family (biology), family is large; botanists have species description, described some 5,500 known species in about 90 ...

native to wetlands of eastern Canada and the United States. It is sometimes called dark green bulsedge, black bulrush, or green bulrush. ''Scirpus atrovirens'' grows in a wide variety of wetland habitats, typically in sunny areas rather than shady. It can be found in

wet meadow A wet meadow is a type of wetland with soils that are Solubility, saturated for part or all of the growing season which prevents the growth of trees and brush. Debate exists whether a wet meadow is a type of marsh or a completely separate type of ...

s and shrubby thickets, openings in swamps, marshes, shorelines, as well as roadside ditches. The plant can grow up to five feet tall, and thrives in

hardiness zones A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most widely ...

3–9. It is closely related to ''

Scirpus hattorianus ''Scirpus'' is a genus of grass-like species in the sedge family Cyperaceae many with the common names club-rush, wood club-rush or bulrush. They mostly inhabit wetlands and damp locations. Description ''Scirpus'' are rhizomatous perennial herbs ...

'' and ''

Scirpus georgianus ''Scirpus georgianus'', or Georgia bulrush, is a flowering plant in the family Cyperaceae that grows in much of the eastern half of North America. Its habitat is wet marshy field areas prone to seasonal flooding. It was described by Roland McMi ...

'', with mature fruits necessary for accurate identification.

References

atrovirens Flora of Northern America {{Cyperaceae-stub