AWARD

CEANOTHUS arboreus 'Trewithen Blue'

Commonly known as Catalina ceanothus, Catalina mountain lilac

Largest blue
Further Reading....

CEANOTHUS arboreus 'Trewithen Blue'

 
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£14.50 each 
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Any 3+ for £12.00 each
  • Evergreen
    Oval to rounded dark-green leaves to 10cm (4in) long.
  • Blue
    Mid-blue
  • Height
    6m (20ft)
  • Spread
    8m (26ft)
  • Tall Shrub
    Vigorous, spreading shrub or small tree
  • Hardy - average winter Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
  • Full sun
    With shelter from cold winds. Most do well trained against a wall.
  • Additional Features
    Good to know - wildlife plant - insects
  • Pests & Diseases
    honey fungus.
  • Place of origin
    native to Catalina Islands, California, USA. This selection bred at Trewithen Gardens, Grampound, Cornwall, UK
  • Flower Shape
    Panicles - large, pyramidal, terminal and lateral panicles to 12cm (4¾in) long
  • Garden Location/Conditions
    Coastal / windswept - slightly back from the sea with more shelter
  • Hardiness
    Frost hardy (down to -5)
  • Leaf margin
    Serrulate see photos above
  • Leaf shape
    Oblong see photos above
  • Pruning group
    Pruning group 5
    Suitable for: Evergreen shrubs that require minimal pruning.
    Action: Trim or lightly cut back shoots that spoil symmetry. Deadhead regularly.
    When: Annually after flowering.

    RHS group 8
  • Scented Plants
    Scented flowers
  • Seasonal Interest
    Spring
  • Soil Conditions
    Fertile well drained soil
  • Tolerates all
    can be lime tolerant but leaves may become chlorotic on shallow chalk soils.
  • Wildlife
    Bee friendly
  • Butterfly friendly
  • Rabbit Resistant
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Ceanothus - Growing Guide
6m (20ft)
Tall Shrub - guide for size not form Average Person
  8m (26ft)
 

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