Threeway Sedge
Dulichium arundinaceum
Last reviewed: June 2026
Light
part sun
Water
high
Size
12"–36" H × 6"–18" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, CA, CT and 36 more states
Threeway sedge is a native wetland grass that forms upright clumps with narrow, arching leaves. It produces small brown flower clusters in summer and thrives in consistently moist to wet soil conditions. This sedge works well in rain gardens, pond edges, and other water-retentive areas.
In an HOA neighborhood
Threeway Sedge takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Looks very wild and unmanicured
- Requires constant moisture which can create muddy conditions
- May appear weedy to those unfamiliar with native sedges
Wildlife value
This sedge provides habitat and nesting material for waterfowl and supports various insects. The seeds are eaten by ducks and other water birds.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Threeway Sedge fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.