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CEANOTHUS 'Joyce Coulter'

Image of Ceanothus 'Joyce Coulter'

Family

Rhamnaceae

Botanical Name

CEANOTHUS 'Joyce Coulter'

Plant Common Name

California Lilac, Joyce Coulter Wild Lilac, Wild Lilac

Special Notice

This entry has yet to be reviewed and approved by L2G editors.

General Description

Intense cobalt blue color and evergreen compact form make this shrub one of the finest varieties of California lilac for gardens. ‘Concha’ may indeed be the most heavily flowered hybrids. It was discovered among seedlings of coastal Santa Barbara lilac, Ceanothus impressus crossed with Ceanothus papillosus var. roweanus. Wider than it is tall, this low branching shrub produces small dark glossy green leaves with a unique wrinkled surface.

‘Concha’ blooms heavily mid to late spring with clusters of tiny blue flowers at the branch tips. Due to the origins of its parents along the coast, it may not perform as well further inland. California lilac may grow in heavier soils but only when well drained, typically on slops gentle and steep. In the wild they prefer the sheltered canyons as well as oak and pine woodlands where it adapts to acidic soils.

Grow ‘Concha’ in full sun on the coast but protect from direct afternoon sun further inland. It is ideal for soils around oak trees where excessive summer water can be problematic. Provide deep irrigation the first year or two after planting to ensure deep rooting, then wean summer water to an occasional deep soaking in year three.

Characteristics

  • AHS Heat Zone

    10 - 7

  • USDA Hardiness Zone

    8 - 10

  • Sunset Zone

    6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Broadleaf Evergreen

  • Sun Exposure

    Full Sun, Partial Sun, Partial Shade

  • Bloom Time

    Spring, Late Spring

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Medium

  • Water Requirements

    Drought Tolerant

  • Habit

    Spreading

  • Seasonal Interest

    Spring, Summer

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Blue

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Green

  • Bark Color

    Sandy Brown, Sienna

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Feature Plant, Mixed Border, Rock Garden / Wall

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No