This variable shrub to small tree is well branched with a thick trunk and forms a compact rounded crown. It has glossy dark green rounded leaves and tiny blue trumpet-shaped flowers appear in a terminal cluster from late spring to early summer.

Hardiness zones 8 to 11 

Ceanothus arboreus is naturally found on the islands off the Californian coast growing in protected positions in well drained moderately fertile stony soils. It prefers a protected sunny position and is mildly drought resistant but frost tender.

Tree Ceanothus normally forms a shrub under cultivation and is grown for its lush foliage and abundant bluish flowers. It is planted in coastal or inland gardens along borders for screening or maybe trimmed to form a hedge. It establishes in 2 to 3 years and hybridises naturally from seed. In wet conditions the plant tends to die suddenly. ID 1024

Ceanothus ((kee-a-NÕ-thus) arboreus (ar-BO-ree-us)

Rhamnaceae (ram-NAY-see-ee)
Rhamnales