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Island Manzanita
Arctostaphylos insularis
  
About Island Manzanita (Arctostaphylos insularis) 6 Nurseries Carry This Plant Arctostaphylos insularis is a species of manzanita known by the common name island manzanita. It is endemic to Santa Cruz Island, one of the Channel Islands of California. It grows in chaparral and woodland. This is a large, spreading shrub ordinarily reaching over two meters tall and known to exceed five meters in height. It has waxy, reddish bark and the smaller twigs sometimes have bristly hairy hairs. The leaves are shiny green and smooth, generally oval in shape and slightly convex, and up to about 4.5 centimeters long. The shrub blooms in many dense clustered flower clusters of urn-shaped flowers. The fruit is an orange-brown drupe up to 1.5 centimeters wide. Its long bloom time makes it a good choice for the coastal southern California garden where it will get some moisture from fog drip.
Plant Description
Plant Type
Plant Type
Shrub

Size
Size
6.6 - 16.4 ft tall
10 ft wide

Form
Form
Mounding

Growth Rate
Growth Rate
Moderate, Slow

Dormancy
Dormancy
Evergreen

Fragrance
Fragrance
Slight

Flower Color
Flower Color
Pink, White, Orange, Brown

Flowering Season
Flowering Season
Winter, Spring

Wildlife Supported
 
Hummingbirds and insects are attracted to the flowers. Various birds and other animals are attracted to the fruits.

 
Butterflies & moths hosted ( 3 confirmed , 11 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Part Shade, Full Sun

Moisture
Moisture
Very Low

Summer Irrigation
Summer Irrigation
Max 1x / month once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to -5° F

Soil Drainage
Soil Drainage
Fast, Medium, Slow

Soil Description
Soil Description
Tolerant of sand and clay. Soil PH: 6.0 - 8.0

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

Propagation
Propagation?
By seeds or cuttings

Sunset Zones
Sunset Zones?
15, 16, 17, 18, 19, 20, 21, 22, 23, 24

Natural Setting
Site Type
Site Type
Rocky slopes and coastal bluffs of the northern Channel Islands

Climate
Climate
Annual Precipitation: 12.2" - 19.2", Summer Precipitation: 0.14" - 0.26", Coldest Month: 47.4" - 53.8", Hottest Month: 62.7" - 70.8", Humidity: 1.37" - 15.81", Elevation: 27" - 1695"


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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