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Pacific Manzanita
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Arctostaphylos pacifica
  

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About Pacific Manzanita (Arctostaphylos pacifica) Pacific Manzanita (Arctostaphylos pacifica) is a very rare native shrub that is known from only a single location in the San Bruno Mountains. It is state-listed as Endangered and is on CNPS list 1B.2. It has also been subject to some taxonomic uncertainty. It was previously considered a hybrid but is now considered a distinct species. Despite its rarity in the wild, it has been available in the horticultural trade for a number of years. It is a ground-cover manzanita that is attractive and garden tolerant. In its native location it enjoys a climate that is very moderate, with 20-40 inches of winter rainfall annually and mild, foggy summers. It is best used along the central coast.
Plant Description
Plant Type
Shrub

Max. Height
1 ft (0.3 m)

Max. Width
10 ft (3.0 m)

Form
Spreading

Growth Rate
Moderate

Dormancy
Evergreen

Flower Color
White

Flowering Season
Spring, Winter
Spring
Summer
Fall
Winter


Native Status
Natural Setting
Site Type
In the only wild location it grows on sandstone bluff as part of northern coastal chaparral

Sun
Sun

Elevation ?
987' - 1198'

Annual Precip. ?
27.8" - 30.1"

Summer Precip. ?
0.37" - 0.39"

Coldest Month ?
48.0° F - 49.8° F

Hottest Month ?
64.7° F - 66.6° F

Humidity ?
1.14 vpd - 11.47 vpd

Soil Description
Prefers sand or sandstone

Soil Texture
Sand

Soil PH
6.0 - 7.0

Drainage
Fast, Medium

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

Companion Plants
Use with other chaparral plants of the central coast, including Ceanothus sp., Silk Tassel Bush (Garrya elliptica), White Pitcher Sage (Lepechinia calycina), Ninebark (Physocarpus capitatus), Leather Oak (Quercus durata), Redberry (Rhamnus crocea), Currant/Gooseberry (Ribes sp.), and Sage (Salvia sp.)

Wildlife Attracted
Insects and hummingbirds are attracted to the flowers. Other birds are attracted to the fruits.

Landscaping Information
Ease of Care
Very Easy

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


Popularity
Moderately Popular

Max. Summer Water ?
2x/month, 3x/month
No Summer Water
1x/month
2x/month
3x/month
1/week
Keep moist


Common uses
Deer Resistant, Bird Gardens, Hummingbird Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Botanical Names
Arctostaphylos X pacifica

Common Names
Hybrid 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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