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Slender Juncus Rush
Juncus occidentalis
About Slender Juncus Rush (Juncus occidentalis) 7 Nurseries Carry This Plant Juncus occidentalis is a species of rush known by the common name western rush. It is native to the western United States, where it grows in wet areas in many types of habitat. This is a bunching perennial herb with thin, stiff stems reaching maximum heights between 30 and 60 centimeters. The wispy leaves grow from the base of the stem and may approach half the stem's length. The flower cluster holds loose bundles of individual flowers and there is usually one long, leaflike leaf extending far past the flowers. Each flower has green-striped brownish to reddish petals each several millimeters long, and six stamens with small anthers. The fruit is a brown capsule which grows encased within the petals.
Plant Description
Plant Type
Plant Type

1 - 2 ft tall

Flower Color
Flower Color

Wildlife Supported


Landscaping Information
Full Sun

Moderate - High


Sunset Zones
Sunset Zones?
1, 2, 3, 4*, 5*, 6*, 7*, 14*, 15*, 16*, 17*, 18*, 19, 20, 21, 22, 23, 24

Natural Setting
Site Type
Site Type
Moist, open places

Annual Precipitation: 4.1" - 154.4", Summer Precipitation: 0.15" - 5.76", Coldest Month: 20.3" - 55.2", Hottest Month: 45.7" - 86.3", Humidity: 0.01" - 37.31", Elevation: -253" - 9946"

Alternative Names
Common Names: Western Rush

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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