• Eventual height: 4m
  • Eventual spread: 4m

Ceanothus arboreus 'Trewithen Blue'

Californian lilac 'Trewithen Blue'

RHS award of garden merit
12 litre pot | 1.2 - 1.5m tall £169.99
Delivery options
  • Standard £7.95
  • Position: Full sun
  • Soil: Moderately fertile, moist but well-drained soil
  • Rate of growth: Fast
  • Flowering period: April to May
  • Hardiness: Borderline hardy (will need protection in winter in colder regions)

A Californian lilac that captivates with its fragrant floral spectacle during late spring and early summer. This vigorous evergreen shrub unfurls glossy dark green leaves, providing a rich foil for its arching branches that bear abundant deep blue flower clusters up to 12cm (5in) long, highly attractive to pollinators. With its tolerance for coastal conditions and ability to thrive against sunny walls in more northerly locations, ‘Trewithen Blue’ is a standout ceanothus choice for sheltered gardens.

  • Garden care:
    Each year after the plant has flowered, reduce the shoots by one third and apply a 5-7cm (2-3in) mulch of well-rotted organic matter around the base of the plant.
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