Ceanothus

Ceanothus, commonly known as California Wild Lilac, can be found in many different plant communities throughout California. They are grown in landscape settings primarily for their prolific blooms, which begin as early as January and continue through April. Flower colors cover the spectrum from white to dark purple, with most being shades of light to dark blue. Mature specimens vary in size and form: some groundcovers will only grow to 6 inches high, while large shrubs can reach 20 feet in height. Ceanothus species are fast growing and do best with good drainage and low amounts of water. Once the plant is established little or no supplemental water is required for many species and cultivars.

REQUIREMENTS: Zones 1-9, 14-24. Full sun to part shade. Once established, apply deep infrequent irrigation in the dry season. True species should not require any irrigation once established.

Because of the demand for the features this species brings to the landscape, horticulturists have spawned an almost boggling array of hybrids and selections in a wide range of colors, forms, and sizes as well as culture. To help sort through the genera's vast variables, please see our Guide to Ceanothus (Wild Lilac)

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  • Ceanothus 'Concha' flowers close-up
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    Ceanothus 'Concha' 15g

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    Stunning, profuse electric blue to violet flowers on rigid stems. Tolerant of heavy soils if not over-watered. Cold hardy to 15°F.
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  • Ceanothus 'Concha' flowers close-up
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    Ceanothus 'Concha' 1g

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    Stunning, profuse electric blue to violet flowers on rigid stems. Tolerant of heavy soils if not over-watered. Cold hardy to 15°F.
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  • Ceanothus 'Concha' habit/landscape
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    Ceanothus 'Concha' 5g

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    Stunning, profuse electric blue to violet flowers on rigid stems. Tolerant of heavy soils if not over-watered. Cold hardy to 15°F.
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  • Ceanothus 'Dark Star' 1g
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    Ceanothus 'Dark Star' 1g

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    Showy rounded flower clusters magenta in bud to dark blue/violet. Compact shrub, heavy soils okay, if not over-watered. Tolerates temperatures in the teens.
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  • Ceanothus 'Frosty Blue' flowers/flower close-up
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    Ceanothus 'Frosty Blue' 1g

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    Medium blue, frosted flowers with dark green, small leaves. Heavy soils okay. Highly recommended.
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  • Ceanothus 'Frosty Blue' flowers/flower close-up
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    Ceanothus 'Frosty Blue' 5g

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    Medium blue, frosted flowers with dark green, small leaves. Heavy soils okay. Highly recommended.
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  • Ceanothus 'Joan Mirov' 1g
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    Ceanothus 'Joan Mirov' 1g

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    A naturally occurring hybrid of C. griseus and C. foliosus introduced by Roger Raiche of the UC Botanical Garden in Berkeley, ‘Joan Mirov’ is a spreading shrub form of Ceanothus that’s ideal for hillside coverage and stabilization. In spring, its slender...
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  • Ceanothus 'Joyce Coulter' 1g
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    Ceanothus 'Joyce Coulter' 1g

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    Electric blue, long-blooming flowering show. Tolerant of garden conditions. Blooms well in shade. Good for long, narrow spaces. Cold hardy to to 15°F.
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  • Ceanothus 'Joyce Coulter' 5g
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    Ceanothus 'Joyce Coulter' 5g

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    Electric blue, long-blooming flowering show. Tolerant of garden conditions. Blooms well in shade. Good for long, narrow spaces. Cold hardy to to 15°F.
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  • Ceanothus 'Julia Phelps' 1g
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    Ceanothus 'Julia Phelps' 1g

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    A hybrid introduced by the Saratoga Horticultural Foundation, ‘Julia Phelps’ is one of the most striking Ceanothus when in bloom. It forms a large, densely-branched evergreen shrub that can be used as an informal hedge or screen or shaped into a small...
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  • Ceanothus 'Owlswood Blue' flowers close-up
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    Ceanothus 'Owlswood Blue' 1g

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    Showy inflorescences on treelike shrub with dark, glossy, broad leaves. Okay in shade or Partial Sun and heavy soils.
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    Ceanothus 'Ray Hartman' 1g

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    Beautiful shrub or small tree with long medium blue flower clusters. Okay for shade, assorted soils.
    Available: 37
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  • Ceanothus arboreus 1g
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    Ceanothus arboreus 1g

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    Large dark leaves, showy light to medium blue flowers.
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