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Arctostaphylos otayensis

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About Otay Manzanita (Arctostaphylos otayensis) Otay Manzanita (Arctostaphylos otayensis) is a beautiful rare native shrub that grows in San Diego county in the the Otay Mountains of San Diego County, possibly extending into northern Baja. It is rare in the northern part of the Peninsular Range. Leaves are striking - light pink when new, and gray- green when mature. Flowers are white and bloom early and long. It tends to grow in stony slopes and volcanic rock outcrops, at elevations from 1000-4000 feet.
Plant Description
Plant Type

Max. Height
3 - 8 ft (0.9 - 2.4 m)

Max. Width
10 ft (3.0 m)

Mounding, Rounded


Growth Rate


Flower Color
Pink, White

Flowering Season
Spring, Winter

Native Status
Natural Setting
Site Type
Volcanic rock outcrops, rocky slopes

Sun, Part Shade

Elevation ?
897' - 4863'

Annual Precip. ?
13.8" - 26.6"

Summer Precip. ?
0.38" - 1.78"

Coldest Month ?
42.5° F - 52.6° F

Hottest Month ?
67.5° F - 77.2° F

Humidity ?
0.98 vpd - 24.01 vpd

Soil Description
Tolerates a variety of soils but probably performs best in coarse, well drained soil such as decomposed granite

Soil PH
6.0 - 7.0


Cold Tolerance(° F)
Tolerates cold to 20° F

Wildlife Attracted
Hummingbirds are attracted to the flowers. Other birds are attracted to the fruits and seeds.

Landscaping Information
Ease of Care
Moderately Easy

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

Seldom Used

Max. Summer Water ?
No Summer Water
Keep moist

Organic with Rocks

Common uses
Hedges, Bird Gardens, Hummingbird Gardens, Bee Gardens

Nursery Availability
Commonly Available

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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