Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Ceanothus divergens, commonly known as Calistoga ceanothus, is a rare evergreen shrub in the Rhamnaceae family. It is found in just a few locations in the Northern California Coast Ranges of California at altitudes of less than 500 meters. This plant has a growth habit described as ascending to erect and may attain a height of 3 ft. The plant's preferred habitat is on shrub-covered, rocky, volcanic slopes. The hermaphrodite blue or purple flowers bloom in April and May. The sub-globose fruits are five to six millimeters in diameter. This plant is rarely seen in cultivation and not often available for sale.

Plant type

Shrub

Size

2 - 3 ft Tall
3 ft Wide

Growth rate

Moderate

Dormancy

Evergreen

Fragrance

Pleasant

Calscape icon
Color

Red, Blue, Purple

Flowering season

Spring, Winter

Special uses

Bank stabilization, Deer resistant

Sun

Full Sun

Water

Very Low

Ease of care

Moderate

Cold tolerance

Tolerates cold to 10° F

Soil drainage

Fast

Soil description

Typically rocky soils.

Propagation

For propagating by seed: Hot water; then 2-3 mos. stratification may improve germination.

Site type

Dry rocky chaparral slopes of Marin, Sonoma and Napa Counties

Plant communities

Chaparral

Use with any chaparral plants of the northern Coast Ranges

Birds
Bees
Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 76 likely

Confirmed Likely

Acanthopteroctetes unifascia

Sallow Button

Acleris hastiana

Cottonwood Dagger Moth

Acronicta lepusculina

Acronicta perdita