Slough Sedge | Carex obnupta - Benton Soil And Water Conservation District

Slough Sedge | Carex obnupta

The image shows lush green grass or tall plants growing in a field, thriving in sunlight.

The image shows a lush field of tall green grass or plants, with a natural landscape in the background.

Large, bushy sedge with evergreen leaves. Blooms in early summer. Spreads by rhizomes.

Plant Details

Habitats	Riparian Forests, Shrub Swamp, Shallow Marsh, Wet Prairie
Mature Height	2-5 ft.
Shade Preference	full sun, part shade
Soil Tolerance	moist soils to standing water
Special Uses	Erosion control. Streambank stabilization. Food and cover for wildlife.

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Native Plant Database

We have a large searchable database of plants that are native to the Willamette Valley and other parts of Benton County. View images and filter the list by plant characteristics

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There are so many good reasons to plant native plants!

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A lush green riparian forest with tall red alder trees and a rocky stream running through it.

Riparian Forests

Riparian areas are defined by NRCS as ecosystems that occur along waterways and water bodies. They serve as the transition between aquatic and terrestrial zones.

Shrub Swamp

Shrub swamps are typically located in depressions, around lakes or ponds or on river terraces. They tend to flood seasonally and are dominated by shrubs or trees that are rooted in hydric soils. These…

A marshy landscape with tall grasses, a few scattered tree stumps, and a dense forest in the background.

Shallow Marsh

Marshes are seasonally or continually flooded and occur in depressions, around lakes or ponds and along slow-flowing streams. Shallow marshes support dominant herbaceous vegetation which is rooted in…

Wet Prairie

Wet prairies were once a common habitat in the floodplain of the Willamette River. These habitats occur on poorly drained clay soils or shallow soils above bedrock. Seasonal flooding creates anaerobic…