Santa Barbara Ceanothus

Ceanothus impressus, Rhamnaceae

Zones

8–10

Layer

Shrub

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerPollinator AttractorBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Silky Prairie CloverDalea villosa

Nitrogen FixationWind ProtectionBeneficial Insect Habitat

Oklahoma BeardtonguePenstemon oklahomensis

Pollinator SharingWind Protection

Variable-leaf CollomiaCollomia heterophylla

Wind ProtectionNurse Plant

Pink SavorySatureja thymbra

Pest DeterrentPollinator Sharing

Sea HollyEryngium maritimum

Wind ProtectionBeneficial Insect Habitat

Antagonistic Plants

California BrickellbushBrickellia californica

Shrubby species produce secondary compounds that inhibit nearby woody plant establishment

Uses

Functions

Attracts Mason BeesSupports Ceanothus Silk MothsProvides Spring NectarAttracts Beneficial WaspsSupports Native Bee Specialists

Medicinal Uses

Respiratory Support

Common Questions

What zones does Santa Barbara Ceanothus grow in?

Santa Barbara Ceanothus grows in USDA hardiness zones 8 through 10.

Is Santa Barbara Ceanothus a nitrogen fixer?

Yes, Santa Barbara Ceanothus is a nitrogen fixer and can help provide nitrogen to neighboring plants in a guild or polyculture.

What are good companion plants for Santa Barbara Ceanothus?

Good companions for Santa Barbara Ceanothus include Silky Prairie Clover, Oklahoma Beardtongue, Variable-leaf Collomia, Pink Savory, Sea Holly.

Design guilds with Santa Barbara Ceanothus and see companion relationships visually.

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