Plant
Spreading Rush
Juncus patensAlso known as California Grey Rush, California Gray Rush
Spreading rush forms dense, arching tussocks of stiff, cylindrical blue-gray stems that provide vital shoreline stabilization along Pacific waterways. Unlike many wetland sedges and rushes, it tolerates prolonged summer drought by entering semi-dormancy once soils dry out. Small brownish flower clusters emerge laterally near the stem tips in summer, offering crucial seed forage for songbirds and shelter for amphibians.
WetlandPerennialDrought-Tolerant
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyAutotrophic (photosynthetic)
Predators
- Mule deer
- Waterfowl
- Granivorous songbirds
ThreatsRiparian habitat destruction, channelization, and invasive weeds
HabitatsMarshes, stream banks, vernal pools, and seasonal seeps
Life spanPerennial (typically 5–15 years)
Classification
- OrderPoales
- FamilyJuncaceae
- GenusJuncus
- SpeciesJuncus patens
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Field Identification: Roll a stem between your fingers to confirm the solid, round structure distinct from triangular sedges.
- Restoration Landscaping: Plant along bioswales or rain gardens to naturally filter urban runoff and control soil erosion.
Frequent Companion (c) Trevor Van Loon, some rights reserved (CC BY), uploaded by Trevor Van Loon · cc-by
Close Relative (c) Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman · cc-by-sa
Close Relative (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar · cc-by
Help improve the field guideSomething wrong?
Checking your Fauna account…Report a name, category, or profile issue for review.