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Mount Diablo Manzanita
Arctostaphylos auriculata

About Mount Diablo Manzanita (Arctostaphylos auriculata) Arctostaphylos auriculata (Mount Diablo Manzanita) is an endangered species of Arctostaphylos, limited in geography to the area surrounding Mount Diablo, in Contra Costa County, California. It is a woody shrub 1-4.5 meter high with serpentine, glandless stems covered in white hair. The short [1.5-4.5 centimeter], silvery leaves overlap and have deeply lobed bases. It flowers densely in white February through May. The fruit is also hairy and small (5-10 millimeter). Arctostaphylos auriculata 'Diablo Blush' is a popular nursery selection of this plant.
Plant Description
Plant Type

Max. Height
3.3 - 15 ft (1 - 4.6 m)


Flower Color
Pink, White

Flowering Season
Spring, Winter

Native Status
Natural Setting
Site Type
Rocky places


Elevation ?
65' - 3713'

Annual Precip. ?
14.6" - 48.9"

Summer Precip. ?
0.21" - 0.54"

Coldest Month ?
46.0° F - 53.0° F

Hottest Month ?
64.4° F - 75.8° F

Humidity ?
1.14 vpd - 22.53 vpd

Landscaping Information
Common uses
Hummingbird Gardens, Deer Resistant, Bee Gardens

Nursery Availability
Rarely Available

Other Names
Common Names
Mt. Diablo Manzanita

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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