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San Bernardino Aster
Symphyotrichum defoliatum
About San Bernardino Aster (Symphyotrichum defoliatum) 0 Nurseries Carry This Plant Symphyotrichum defoliatum (formerly Aster bernardinus) is a species of aster known by the common name San Bernardino aster. It is endemic to Southern California, where it is known only from the San Bernardino and San Gabriel Mountains of the Transverse Ranges, and part of the Peninsular Ranges to the south. It grows in grassland and meadow habitat and in disturbed areas. This is a perennial herb growing from a long rhizome to a maximum height near one meter. Leaves are widely lance-shaped to oblong and pointed, the largest ones near the base of the stem reaching up to 12 centimeters long. The stem and leaves are roughly hairy. The inflorescence is an array of flower heads with many narrow white to light violet ray florets around a center of golden disc florets. The fruit is a hairy achene with a long pappus.
Plant Description
Plant Type
Plant Type
Perennial herb

3.3 ft tall

Flower Color
Flower Color
White, Purple

Wildlife Supported


Landscaping Information
Common uses
Common uses
Bird Gardens, Butterfly Gardens, Bee Gardens

Natural Setting
Annual Precipitation: 5.9" - 32.7", Summer Precipitation: 0.19" - 2.72", Coldest Month: 33.7" - 56.0", Hottest Month: 62.3" - 79.4", Humidity: 0.79" - 29.40", Elevation: 2" - 6790"

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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