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Bolboschoenus maritimus
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Alkali Bulrush
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Bolboschoenus maritimus

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About Alkali Bulrush (Bolboschoenus maritimus) Bolboschoenus maritimus is a species in the Cyperaceae (Sedge) family known as Alkali Bulrus. This is a strictly wetland plant that is highly tolerant of alkali or salty conditions. It is found throughout California, wherever these conditions exist. It spreads vigorously by rhizomes and will rapidly fill in wherever there is sufficient water. This plant is unlikely to be used in residential gardens but could be useful if you are creating a bioswale.
Plant Description
Plant Type

Max. Height
3 ft (0.9 m)

Growth Rate


Flower Color

Native Status

Natural Setting
Site Type
Wetlands, such as salt marsh or drainage ditches


Elevation ?
-231' - 6566'

Annual Precip. ?
2.5" - 72.2"

Summer Precip. ?
0.13" - 1.96"

Coldest Month ?
31.9° F - 61.4° F

Hottest Month ?
55.9° F - 89.4° F

Humidity ?
0.01 vpd - 43.66 vpd

Soil Description
Tolerates any kind of soil as long as sufficient water is present

Soil PH
5.0 - 8.0

Standing, Standing

Companion Plants
Use with other wetland plants such as Cattail (Typha sp.) and Rush (Juncus sp.)

Wildlife Attracted
Various wetland-riparian birds are attracted to sedges.

Landscaping Information
Water Requirement ?
Moderate - High
Extremely Low
Very Low
Moderate - High

Never or Almost Never Used

Max. Summer Water ?
Keep moist
No Summer Water
Keep moist

Propagation ?
Usually propagated by root cuttings

Common uses
Bogs and Ponds

Nursery Availability
Sometimes Available

Other Names
Botanical Names
Scirpus maritimus

Common Names
Cosmopolitan Bulrush

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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