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Vine Hill Manzanita
Arctostaphylos densiflora

About Vine Hill Manzanita (Arctostaphylos densiflora) Arctostaphylos densiflora is a very rare species of manzanita known by the common name Vine Hill manzanita. It is endemic to Sonoma County, California, where it is known from only one extant population of 20 to 30 individuals. These last wild members of the species are on land near Sebastopol which is owned and protected by the California Native Plants Society. The local habitat is mostly chaparral on sandy shale soils. It is also cultivated as a landscape plant. The species is the origin of several popular cultivars including 'Sentinal' and 'Howard McMinn'. This is a small shrub growing in low, spreading clumps under a meter in height, although cultivars may get taller. The plant does not form a burl, and stems may root where they are in constant contact with soil. The shiny green leaves are oval to widely lance-shaped and less than 3 centimeters long. It bears numerous flower clusters of light to bright pink urn-shaped flowers. The fruit is a drupe about half a centimeter wide.
Plant Description
Plant Type

Max. Height
3.3 ft (1 m)

Max. Width
6 ft (1.8 m)

Mounding, Spreading


Growth Rate


Flower Color
Pink, White

Flowering Season
Spring, Winter

Native Status
Natural Setting
Site Type
Chaparral on sandy shale outcrops and pine barrens near the coast primarily in Sonoma County


Elevation ?
82' - 2138'

Annual Precip. ?
22.7" - 94.5"

Summer Precip. ?
0.21" - 2.55"

Coldest Month ?
43.0° F - 47.4° F

Hottest Month ?
65.3° F - 72.1° F

Humidity ?
0.39 vpd - 20.54 vpd

Soil Description
Tolerates a variety of soils but performs best in a well drained loam

Soil PH
5.0 - 8.0

Fast, Medium

Cold Tolerance(° F)
Tolerates cold to 10° F

Companion Plants
Works well with a number of low to medium height plants including Ceanothus species, Buckwheat (Eriogonum species), and Sages (Salvia species).

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

Landscaping Information
Ease of Care
Very Easy

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

Moderately Popular

Max. Summer Water ?
No Summer Water
Keep moist

Organic with Rocks

Prune in late summer to achieve desired height or spread

Propagation ?
Seed or by rooted cuttings

Common uses
Hedges, Bird Gardens, Deer Resistant, Butterfly 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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