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Carried by 2 nurseries
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Plant type

Shrub

Size

8 ft Tall

Dormancy

Evergreen

Color

Cream, Green

Flowering season

Winter, Spring

Common uses

Bank stabilization, Hedge

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.

Sun

Full Sun, Partial Shade

Water

Low

Ease of care

Moderate

Soil drainage

Fast

Sunset Zones

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

Many companion plants including: Coastal Live Oak (Quercus agrifolia var. oxyadenia), Scrub Oak (Quercus berberidifolia), Hollyleaf Cherry (Prunus ilicifolia), Sugar Bush (Rhus ovata), Sourberry (Rhus aromatica), Chaparral Whitethorn (Ceanothus leucodermis), Cup-leaved Ceanothus (Ceanothus perplexans), Chamise (Adenostoma fasciculatum), Red Shanks (Adenostoma sparsifolium), Big Sagebrush (Artemisia tridentata), California Buckwheat (Eriogonum fasciculatum), California Fuchsia (Epilobium canum), Acton Encelia (Encelia actoni), Brittlebush (Encelia farinosa), San Diego Mountain Mahogany (Cercocarpus minutiflorus), White Sage (Salvia apiana), Chia (Salvia columbariae), California Aster (Corethrogyne filaginifolia), Desert Gooseberry (Ribes velutinum), Giant Stipa (Stipa coronata), Chaparral Yucca (Hesperoyucca whipplei), Yucca spp., Cylindropuntia spp., and many other desert species.

Chamise

Adenostoma fasciculatum

Red Shanks

Adenostoma sparsifolium

Big Sagebrush

Artemisia tridentata

Chaparral Whitethorn

Ceanothus leucodermis

Caterpillars
Pollinators

Butterflies and moths supported

0 confirmed and 132 likely

Confirmed Likely

Abagrotis baueri

Acrobasis caliginella

Acrobasis comptella

Frosty Dagger Moth|Charred Dagger

Acronicta brumosa

Site type

Slopes, granitic soils

Plant communities

Chaparral, Woodland