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Ceanothus arboreus ‘Trewithen Blue’

Catalina ceanothus

Garden

Wishlist

  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017
  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017
  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017

Features

  • BloomsMarch to June
  • Height3m to 6m
  • Spread4m to 8m
  • Growth HabitBroad bushy
  • Flower ColourMedium blue
  • Leaf ColourDark green
  • AwardsRHS Garden Merit

Description

Ceanothus arboreus ‘Trewithen Blue’ (Catalina ceanothus). A vigorous, evergreen, spreading shrub which carries panicles of medium blue flowers in early spring to early summer. Broadly oval to rounded dark green leaves are grown.

Characteristics

Evergreen, Shrub

Origin

Santa Barbara Island

Interest and use

Banks, hedging, specimen, walls and trellises

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  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017
  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017
  • Ceanothus arboreus ‘Trewithen Blue’ | Copyright Greenplantswap 2017

Needs

  • LightPart shade
  • HardinessFrost hardy (min -5°C)
  • SoilSandy, Chalky
  • Soil pH7.0 to 9.0
  • WaterSemi-moist

Cultivation

They are frost to half hardy; in cold areas you should plant against a south or west facing wall. They will need a sheltered site in full sun and light well drained soil. Remember to cut out the dead wood from the evergreens in the spring and trim their side shoots after flowering. Cut back shoots of deciduous species to basal framework in early spring.

Propagation

You can propagate by greenwood or heel cuttings in the summer.

Pests, diseases or disorders

Susceptible to honey fungus and scale insects.

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