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    • Photo of Ceanothus thyrsiflorus form, white form by Stan Shebs

    Photo by Stan Shebs

    This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

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    Ceanothus thyrsiflorus

    Also Known As

    • Ceanothus thyrsiflorus var. thyrsiflorus
    • Blue Blossom Ceanothus
    • Blue Brush
    • Blueblossom
    • California Lilac

    Plant type

    tree, shrub

    size

    • H: 10'-20'
    • W: 10'-20"

    planting zones

    • 7a-11

    More Options

    Ceanothus thyrsiflorus plant details

    Ceanothus thyrsiflorus is a broadleaf evergreen shrub or tree with green foliage. In spring blue and white flowers emerge followed by black fruit. Features glossy texture. Attracts bees, birds and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - dappled shade and regular - low water. Drought tolerant once established. Prefers to be dry in summer. Adapts to various soil conditions. Does well in average, clay, gritty, rocky and well-drained soil. A good option if you're seeking something heat tolerant, seaside / salt tolerant, verticillium wilt resistant and wind tolerant.

    CHARACTERISTICS OF Ceanothus thyrsiflorus

    Plant type: shrub or tree
    Plant family: rhamnaceae
    Foliage: evergreen green
    Mature size: 10 FT - 20 IN - wide, 10 FT - 20 FT - tall
    Flowers: blue and white blooms in spring
    Uses: fragrant

    GROWING CONDITIONS for Ceanothus thyrsiflorus

    USDA Zones: 7a - 11
    Sun exposure: sun - dappled shade
    Watering frequency: regular - low
    Resistant to: heat, seaside / salt, verticillium wilt and wind
    Soil needs: average, clay, gritty, rocky and well-drained

    Nursery contributed plant descriptions

    Wild lilac and blue blossom are both wonderfully descriptive names for this large (6-15') western native, garden-adaptable shrub when it produces its fragrant, late spring flowers of pale azure to deep brightest ultra-marine. S/M-D/GDr

    By: Forestfarm

    Blueblossom ceanothus is a hardy, large evergreen shrub 15' to 25' and is Endemic (limited) to California alone. Blueblossom is an attractive plant with glossy green 2'' leaves and a fragrant sky-blue blossom flower show in spring. Great choice for a sunny coastal garden! Found in the coastal range, from Santa Barbara Co, to southern Oregon Attracts insects for food for tanagers, shrikes, and others. Nectar source for hummingbirds and seed for bushtits, finches. Larval food for Spring Azure, Pale Swallowtail, Lorquin's Admiral. The Kashaya Pomo people used the flowers in wreathes and mixed them with water to make soap for washing the body. Found in wooded slopes and canyons, often near streams, in evergreen forests in california. Communitites located in Chaparral, Redwood Forest, Mixed Evergreen Forest, Northern Coastal Scrub Between 0 and 1968 feet.

    By: The Watershed Nursery

    Native to the coast of Oregon and California, this very hardy and adaptable "wild lilac" is the parent of many popular hybrids including 'Victoria'. It will make a large shrub or small tree to about 14' with glossy evergreen leaves. When I drove the Oregon Coast in May 2002, this plant lit up the hillsides with its explosion of blue flowers. It is one of the most adaptable Ceanothus when it comes to tolerating heat and some summer moisture. Hardy to 0 °F.

    By: The Desert Northwest

    Amazing, native ceanothus, a parent of many cultivars and spectacular in its own right. A large, evergreen shrub, with typically crinkled, dark green leaves, and large clusters of pale blue, sweetly fragrant flowers in spring. Can reach 12' tall or more and does well on the bright edge of woodlands. Sun to part shade in well-drained soil. Drought tolerant but appreciative of occasional deep watering in summer. Frost hardy in USDA zone 8.

    By: Cistus Nursery

    Gardening facts about Ceanothus thyrsiflorus plant

    How to Grow Ceanothus thyrsiflorus

    • Sun Exposure

      • sun - dappled shade

    • Water Needs

      • regular - drought tolerant

    • Water Needs

      • dry in summer

    • Soil Needs

      • clay
      • adaptable
      • average
      • well-drained
      • rocky
      • gritty

    • Special Situation

      • heat tolerant
      • seaside / salt tolerant
      • wind tolerant
      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Flower Color

      • white
      • blue

    • Wildlife

      • birds
      • bees
      • butterflies

    • Fruit

      • black

    • Flower Season

      • spring

    • Foliage Season

      • evergreen

    • Texture

      • glossy

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