File:Los Encinos live oak.jpg Quercus agrifolia var. agrifolia
File:Quercus agrifolia foliage.jpg File:Cloacorne.jpg Quercus agrifolia var. agrifolia
Common Name Coast live oak, California live oak
Latin Name Quercus agrifolia
Family / Origin Fagaceae /
Sunset zone / USDA zone 7-9, 14-24 / 7-10
Type / Form Tree / Large
Native Habitat 3,000 to 5,000 on dry slopes of Coastal Mountains
Soil Dry decomposed granite, clay loam with some organic content
Exposure Sun to partial sun
Water Once per month depending on soil
Height X Width 20 feet X 40 feet, maximum 100 feet
Protective Mechanism Holly-like leaves
Leaves Evergreen, holly-like
Flowers Males yellow-green catkin, females reddish green spike, Mar, Apr
Bark / Roots The bark of young trees is smooth. With age, it develops deep furrows, ridges, and a thickness of about 8 to 9% of bole or branch diameter. The inner bark and cork layers are thick.  / The root system consists of a deep taproot that is usually nonfunctional in large trees. Several deep main roots may tap groundwater if present within approximately 36 feet (11 m) of the soil surface. Coast live oak develops extensive horizontal root branches and surface-feeding roots. Tree roots in southwestern California are associated with mycorrhizae that aid in water uptake during the dry season. A network consisting of roots from 3 coast live oak trees and their and associated mycorrhizae covered a 50- × 13-foot (15- × 4-m) area of the soil profile that reached through weathered granite through to bedrock. Roots in clay soils were not infected with mycorrhizae.
Maintenance Limbs may have to be pruned to allow for vehicle passage but do not prune during spring time due to exposure to disease, likes its litter (retains water and littler is not a fire hazard).
Propagation Seed
Pests and Disease

Resistant to Verticillium. Susceptible to Aphids, Beetle Borers, Beetle Grubs, Caterpillars, Coddling Moths, Insect Galls, Scales and White Fly, Sudden Oak Death, Crown Rot, Mistletoe, Oak Root Rot, Phytophthora, Powdery Mildew, Root Rot and Sooty Mold.
Landscape Uses Erosion control, windbreak, borders, low maintenance, fire retardant
Garden Suitability Mountain, Songbird, Butterfly, Fire Retardant, Ethnobotanical
Nature Value Acorns eaten by squirrels and strong beaked birds, larval plant for butterflies and several species of wasps
Native American Uses Acorns leached, ground for soup and flour for unleavened bread
Comments The Coast live oak is the larval host to the below listed butterflies:
         
Properitius Duskywing               Mournful Duskywing                    California Sister
Erynnis properitius                  Erynnis tristis                              Adelpha bredowii
Links  
    Images and data http://danr.ucop.edu/ihrmp/coast.html
    Images and data http://www.cnr.vt.edu/DENDRO/dendrology/syllabus2/factsheet.cfm?ID=548
    Images and data http://en.wikipedia.org/wiki/Quercus_agrifolia
    Images and data http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=6983
    Images and data http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?Quercus%20agrifolia
    Images and data http://www.wildflower.org/plants/result.php?id_plant=quag
    Images and data http://selectree.calpoly.edu/treedetail.lasso?rid=1227
    Images and data http://commons.wikimedia.org/wiki/Quercus_agrifolia
    Images and data http://www.coestatepark.com/quercus_agrifolia_coe.htm
    Images and data http://www.enature.com/fieldguides/detail.asp?recNum=TS0068
    Images and data http://www.parksconservancy.org/our-work/native-plant-nurseries/information/quercus-agrifolia.html
    Images and data http://www.theodorepayne.org/mediawiki/index.php?title=Quercus_agrifolia
    Images and data http://foundsf.org/index.php?title=Coast_Live_Oaks_(Quercus_agrifolia)
    Images and data http://www.fotopedia.com/en/Quercus_agrifolia
    Images and data http://www.learn2grow.com/plants/quercus-agrifolia/
    Images and data http://www.pollenlibrary.com/Specie/Quercus+agrifolia/
    Images and data http://www.desert-tropicals.com/Plants/Fagaceae/Quercus_agrifolia.html
    Data http://www.fs.fed.us/database/feis/plants/tree/queagr/all.html
    Data http://tribes.tribe.net/warriortreeworld/thread/4fddb3f7-a4e6-4c39-9abb-bee6662ddb7e
    Nursery, images, and data http://www.laspilitas.com/plants/552.htm
    Data http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501005
    Distribution map http://www.efloras.org/object_page.aspx?object_id=6726&flora_id=1
    Distribution map http://plants.usda.gov/java/profile?symbol=QUAG
    Nursery Oak Hills Nursery, 13874 Ranchero Road, Oak Hills, 92345, 760-947-6261
    Nursery http://www.cnplx.info/nplx/species?taxon=Quercus+agrifolia
Notice: Moderate pollinator
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