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Western Marsh Rosemary Back to Plant Page
Limonium californicum

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About Western Marsh Rosemary (Limonium californicum) Limonium californicum is a species of sea lavender known by the common names western marsh rosemary and California sea lavender. It is native to western North America from Oregon to Baja California, with occasional sightings in Nevada and Arizona. It is a plant of coastal habitat such as beaches, salt marshes, and coastal prairie, and other sandy saline and alkaline habitat such as playas. This is a tough perennial herb growing from a woody rhizome. The thick, leathery leaves are oval in shape and up to about 30 centimeters long including the petioles, located in a basal rosette about the stem. The flower cluster is a stiff, branching panicle no more than about 35 centimeters tall bearing large clusters of flowers. The flowers have brownish white ribbed sepals and lavender to nearly white petals.
Plant Description
Plant Type
Perennial herb

Max. Height
1 - 2 ft (0.3 - 0.6 m)

Max. Width
1 - 2 ft (0.3 - 0.6 m)

Mounding, Spreading

Growth Rate


Thick, leathery, oval in shape, pale green in color

Flower Color
Blue, Lavender, White, Brown

Flowering Season
Summer, Fall

Native Status

Natural Setting
Site Type
Salt marshes, beaches and bays


Elevation ?
-23' - 1433'

Annual Precip. ?
9.4" - 46.1"

Summer Precip. ?
0.17" - 1.42"

Coldest Month ?
46.0° F - 56.6° F

Hottest Month ?
57.0° F - 77.4° F

Humidity ?
0.38 vpd - 21.44 vpd

Soil Description

Soil Toxicity Tolerance
Tolerates Saline Soil

Fast, Medium, Slow, Standing

Cold Tolerance(° F)
Tolerates cold to 25 - 30° F

Sunset Zones ?
5, 15, 16, 17*, 21, 22*, 23*, 24*

Wildlife Attracted
Many pollinators

Landscaping Information
Ease of Care
Moderately Easy

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

Moderately Popular

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


Common uses
Bogs and Ponds

Nursery Availability
Commonly Available

Other Names
Common Names
California Sea Lavender

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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