Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Known by the common names Mountain Buckbrush or Desert Ceanothus, it is native to the southwestern United States and northern Mexico where it grows in desert scrub, sagebrush, chaparral, and other dry habitat. This shrub grows erect to nearly 2 meters in maximum height. Its woody parts are gray in color and somewhat woolly. The evergreen leaves are oppositely arranged and variable in shape. They may be toothed or smooth along the edges. The flower cluster is a small cluster of many white flowers. The fruit is a horned capsule a few millimeters wide which bursts explosively to expel the three seeds. The seeds require thermal scarification from wildfire before they can germinate. This shrub is eagerly browsed by livestock and wild ungulates such as Mule deer and Desert Bighorn Sheep. Also known to attract a variety of bird species.

Plant type

Shrub

Size

4 - 7 ft Tall
7 ft Wide

Form

Upright, Rounded

Growth rate

Moderate

Dormancy

Evergreen

Fragrance

Pleasant

Calscape icon
Color

Blue, White

Flowering season

Spring, Winter

Special uses

Bank stabilization, Hedge

Sun

Full Sun

Water

Low, Very Low

Summer irrigation

Max 2x / month once established

Ease of care

Moderate

Soil drainage

Fast, Medium

Soil description

Generally well drained such as decomposed granite.
Soil PH: 5.5 - 7.5

Propagation

For propagating by seed: Hot water and 2-3 mos. stratification.

Site type

In the southern part of its range, it is found on dry slopes of desert transition between 3, 500 and 7, 500 ft. as part of chaparral or sagebrush scrub. In the northern part of its range, it is found with Joshua Tree woodland, Pinyon-Juniper woodland or Ponderosa pines

Plant communities

Chaparral, Joshua Tree Woodland, Pinyon-Juniper Woodland, Sagebrush Scrub, Yellow Pine Forest

Desert transition or plants tolerant of hot, dry inland locations such as Desert Lavender (Condea emoryi), Desert Scrub Oak (Quercus cornelius-mulleri), Big Sagebrush (Artemisia tridentata), Antelope Bush (Purshia tridentata), Desert Sage (Salvia dorii), Honey Mesquite (Prosopis glandulosa), Mojave Yucca (Yucca shidigera) and cactus species.

Caterpillars
Butterflies

Butterflies and moths supported

3 confirmed and 75 likely

Confirmed Likely

Bank's Emerald Moth

Chlorosea banksaria

White-streaked Saturnia Moth

Saturnia albofasciata

Hedgerow Hairstreak

Satyrium saepium

Acanthopteroctetes unifascia