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White Haired Manzanita
Arctostaphylos viridissima

About White Haired Manzanita (Arctostaphylos viridissima) Arctostaphylos viridissima is a species of manzanita known by the common names whitehair manzanita and McMinn's manzanita. It is endemic to Santa Cruz Island, one of the Channel Islands of California. This is a shrub varying in shape and size. It may be a matted bush one meter tall to a spreading treelike form over 4 meters in height. Its stem and branches are covered in peeling red bark and its smaller twigs are woolly and bear long white bristles. The leaves are oval in shape, fuzzy when new and green and shiny when mature, reaching 3.5 centimeters. The flower cluster is a dense cluster of urn-shaped manzanita flowers. The fruit is a fuzzy drupe just over a centimeter wide.
Plant Description
Plant Type

Max. Height
3.3 - 13.1 ft (1 - 4 m)


Flower Color
White, Pink

Flowering Season
Spring, Winter

Native Status
Natural Setting
Site Type
Shale outcrops,

Sun, Part Shade

Elevation ?
13' - 4488'

Annual Precip. ?
12.4" - 31.8"

Summer Precip. ?
0.17" - 0.73"

Coldest Month ?
39.1° F - 56.0° F

Hottest Month ?
63.0° F - 73.4° F

Humidity ?
0.68 vpd - 24.30 vpd


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

Common uses
Bird Gardens, Hummingbird Gardens, Bee Gardens

Nursery Availability
Sometimes Available

Other Names
Common Names
Mcminn's Manzanita, Whitehair 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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