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Sapphire Woollystar
Eriastrum sapphirinum
About Sapphire Woollystar (Eriastrum sapphirinum) 1 Nurseries Carry This Plant Eriastrum sapphirinum is a species of flowering plant in the phlox family known by the common name sapphire woollystar. This wildflower is endemic to California where it is found in many habitats throughout the state. It is an annual reaching anywhere from 5 to 40 centimeters in height, forming clumps or singular spindly stems. The stem is erect and may be reddish to green, and has the occasional threadlike leaf with sparse hairs to a coat of dense wool. The flower clusters at the tips of the stems are packed with pointed, leaflike green to red leafs and funnel-shaped flowers. The corolla of the flower has five lobes each one half to one centimeter long and pale to bright blue. The throat of the flower is the same color or yellowish to white. At the mouth of the tube there may be dots of yellow and white. The light colored stamens protrude.
Plant Description
Plant Type
Plant Type
Annual herb

0.16 - 1.3 ft tall

Flower Color
Flower Color

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL
Schinia aurantiaca Image
Schinia aurantiacaSchinia aurantiaca

Landscaping Information
Full Sun


Natural Setting
Site Type
Site Type
Dry places

Annual Precipitation: 3.4" - 41.3", Summer Precipitation: 0.20" - 3.00", Coldest Month: 31.6" - 59.7", Hottest Month: 57.1" - 88.2", Humidity: 1.04" - 39.21", Elevation: 180" - 8704"

Alternative Names
Common Names: Sapphire Eriastrum

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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