Knotted Rush
Juncus nodosus
Last reviewed: June 2026
Light
part sun
Water
high
Size
12"–36" H × 4"–12" W
Bloom
Jun, Jul, Aug
Native to
AZ, CA, CO, CT and 28 more states
Browse plants for this ecoregion
Knotted rush is a native wetland grass with slender, upright stems and small clusters of brownish flowers. It thrives in consistently moist to wet soils and naturally forms small colonies over time.
In an HOA neighborhood
Knotted Rush takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Looks like an ornamental grass but less refined
- Requires consistently wet conditions that may appear problematic
- Brown seed heads can look untidy to conventional tastes
Wildlife value
This rush provides habitat and nesting material for wetland birds and supports various small insects. The seeds are eaten by waterfowl and songbirds.
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 Knotted Rush fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.