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Twoflowered Rush

Juncus biglumis

Last reviewed: June 2026

Twoflowered Rush (Juncus biglumis)
Photo: Denchev TT, Knudsen H, Denchev CM (2020) The smut fungi of Greenland. MycoKeys 64: 1-164. https://doi.org/10.3897/mycokeys.64.47380 / Wikimedia Commons (CC BY 4.0)

Light

full sun

Water

medium

Size

2"–8" H × 1"–4" W

Bloom

Jun, Jul, Aug

Native to

CO, MT, NM, WY

Twoflowered rush is a compact alpine perennial that forms small, neat clumps of grass-like foliage. This diminutive rush produces tiny flowers during summer months and maintains a tidy, low-growing habit perfect for rock gardens or alpine plantings.

In an HOA neighborhood

Twoflowered 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.

  • Extremely small size makes it nearly invisible in typical landscapes
  • Alpine nature means it may not thrive in typical yard conditions
  • Grass-like appearance could be mistaken for weeds

Wildlife value

As a native rush species, it provides habitat and nesting material for small birds and beneficial insects. The seeds may attract finches and other small seed-eating 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 Twoflowered Rush fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.