Brownhead rush
Juncus phaeocephalus
Last reviewed: September 2026
Brownhead rush (Juncus phaeocephalus) is a perennial grass native to CA, OR, WA. It blooms in April, May, and June. The flowers draw wind pollinated.
Toxicity unknown
Brownhead rush (Juncus phaeocephalus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
high
Size
12"–30" H × 12"–18" W
Bloom
Apr, May, Jun
Native to
CA, OR, WA
Pollinators
wind pollinated
Before you buy
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A tufted rush with round, wiry dark green stems and small brown flower clusters near the stem tips. Forms dense clumps in seasonally wet meadows, seeps, and ditches.
Growing Brownhead rush
Grow Brownhead rush in full sun and high water. Mature plants reach 12 to 30 inches tall and spread 12 to 18 inches wide.
Wildlife value
Provides nesting material and cover for wetland birds, and its root mass helps stabilize wet soils.
Common questions
- How much sun does Brownhead rush need?
- Brownhead rush grows best in full sun conditions.
- When does Brownhead rush bloom?
- Brownhead rush blooms in April, May, and June.
- Where is Brownhead rush native?
- Brownhead rush (Juncus phaeocephalus) is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Brownhead rush attract?
- Brownhead rush draws wind pollinated.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Brownhead rush? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.