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Slough Sedge

Carex obnupta

A robust, evergreen wetland sedge with arching dark-green blades and drooping flower spikes. A backbone plant for rain gardens, pond edges, and bioswales in the Northwest. Sedge seed is recorded as an Indigenous food, though nothing specific to this species survives.

Family

Cyperaceae

Type

grass

Lifespan

perennial

Height

3–3 ft

Spacing

2–3 ft apart

Light

sun, part shade, shade

Soil moisture

wet, moist

Soil pH

acidic, neutral

Bloom

July, August

Bloom colors

yellow

Wildlife value

songbirds

Landscape uses

specimen, border, rain garden, erosion control, naturalizing

Native states

CA, OR, WA