Home
Advanced Search Map Locator
View Settings
Nurseries Carrying this Plant Add Current Plant To List Edit Current Plant
Show all Photos

About Calscape Nurseries
California Garden Planner Bay Area Garden Planner (NEW) Planting Guide
Butterflies My Plant Lists
Contact Calscape
Tap map to see plants native to location
Order by Popularity Order by Common Name Order by Scientific Name Order by # of Butterflies Hosted
Show nursery cultivars Hide nursery cultivars
Show plants not in nurseries Hide plants not in nurseries
Grid view Text view
Loading....
Muller Oak
Quercus cornelius-mulleri
  
1 Nurseries Carry This Plant

About Muller Oak (Quercus cornelius-mulleri) 1 Nurseries Carry This Plant Quercus cornelius-mulleri is a North American species of oak known by the common name Muller oak, or Muller's oak. It was described to science in 1981 when it was segregated from the Quercus dumosa complex and found to warrant species status of its own. It was named for the ecologist Cornelius Herman Muller. It is native to southern California and Baja California, where it grows in chaparral, oak woodlands, and other habitat in foothills and mountains. It can most easily be observed in Joshua Tree National Park and in the woodlands along the western margins of the Colorado Desert in San Diego County, California. Quercus cornelius-mulleri is a bushy shrub not exceeding 3 meters (10 feet) in height. It is densely branched, its tangled twigs gray, brown, or yellowish, fuzzy when new and becoming scaly with age. Quercus cornelius-mulleri is a bushy shrub not exceeding 3 meters (10 feet) in height. It is densely branched, its tangled twigs gray, brown, or yellowish, fuzzy when new and becoming scaly with age. The evergreen leaves are leathery and thick. They are bicolored: white and quite woolly on the undersides and dull gray- or yellow-green and faintly hairy on the upper surfaces. The wool on the undersides of the leaves is made up of star-shaped leaf hairs that are fused into microscopic plates. The leaf blades are oval with smooth or toothed edges, and measure 2. 5 to 3. 5 centimeters (1. 0-1. 4 inches) in length. The fruit is an acorn with a cap up to 2 centimeters (0. 8 inches) wide covered in light-colored scales and a cylindrical, round-ended nut up to 3 centimeters (1. 2 inches) long.
Plant Description
Plant Type
Plant Type
Shrub

Size
Size
8 ft tall

Dormancy
Dormancy
Evergreen

Flower Color
Flower Color
Cream, Green

Flowering Season
Flowering Season
Winter, Spring

Wildlife Supported
 
Many insects are attracted to Oaks generally, including the following butterflies which use Oaks as host plant: California Sister, Propertius Duskywing, Mournful Duskywing, Golden Hairstreak, and Gold-Hunter's Hairstreak.

 
Butterflies & moths hosted ( 132 likely * ) SHOW ALL
*
Papilio rutulus Image
Western Tiger Swallowtail Papilio rutulusPapilio rutulus
*
Limenitis lorquini Image
Lorquin's Admiral Limenitis lorquiniLimenitis lorquini
*
Adelpha californica Image
California Sister Adelpha californicaAdelpha californica
*
Erynnis propertius Image
Propertius Duskywing Erynnis propertiusErynnis propertius
*
Satyrium californica Image
California Hairstreak Satyrium californicaSatyrium californica
*
Habrodais grunus Image
Golden Hairstreak Habrodais grunusHabrodais grunus
*
Erynnis tristis Image
Mournful Duskywing Erynnis tristisErynnis tristis

Landscaping Information
Sun
Sun
Full Sun, Part Shade

Moisture
Moisture
Low

Nurseries
Nurseries
Carried by 1

Ease of Care
Ease of Care
Moderately Easy

Soil Drainage
Soil Drainage
Fast

Common uses
Common uses
Bank Stabilization, Hedges, Bird Gardens, Butterfly Gardens

Companion Plants
Companion Plants
Many companion plants including: Quercus agrifolia var. oxyadenia, Quercus berberidifolia, Prunus ilicifolia, Rhus ovata, Rhus aromatica, Ceanothus leucodermis, Ceanothus perplexans, Adenostoma fasciculatum, Adenostoma sparsifolium, Artemisia tridentata, Eriogonum fasciculatum, Epilobium canum, Encelia actoni, Encelia farinosa, Cercocarpus minutiflorus, Salvia apiana, Salvia columbariae, Corethrogyne filaginifolia, Ribes velutinum, Stipa coronata, Hesperoyucca whipplei, Yucca spp, Cylindropuntia spp, and many other Desert species.

Sunset Zones
Sunset Zones?
2, 3, 7*, 8, 9*, 10, 11, 14*, 15, 16, 18*, 19*, 20*, 21*, 22, 23

Natural Setting
Site Type
Site Type
Slopes, granitic soils

Climate
Climate
Annual Precipitation: 4.0" - 29.9", Summer Precipitation: 0.25" - 2.77", Coldest Month: 34.3" - 58.8", Hottest Month: 62.8" - 87.5", Humidity: 1.45" - 38.31", Elevation: 124" - 6831"

Alternative Names
Common Names: Muller's Oak


Print Plant Sign Print Plant Label
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


Sign in to your Calscape Account X




Once signed in, you'll be able to access any previously saved plant lists or create new ones.

Email Address
Password

Sign In