Ceanothus 'Blue Mound' (Californian Lilac) – Evergreen Shrub (2L Pot)

A compact, rounded ceanothus that disappears under bright blue blossom in late spring.

'Blue Mound' is the neat one in this range, making a dense, rounded shrub packed with flower rather than a tall wall shrub. The small, glossy dark green leaves hold through the winter and give structure between the flowering flushes. Our source gives a mature size across this range of 0.9m to 3m tall and 2m to 4m wide, with 'Blue Mound' at the compact end. Flowering runs from late spring into early summer, often with a lighter repeat in autumn, and bees and butterflies work it hard.

Give it a warm, sunny spot with shelter from cold drying winds, ideally against a south or west facing wall, in soil that drains freely. The RHS lists ceanothus among the plants for milder coastal gardens, so it takes salt air, though it still wants shelter from the worst gales. Once established it copes with dry ground and needs very little attention. Trim lightly straight after flowering and never cut into old wood, because the evergreen kinds do not reshoot from bare stems. Ceanothus grows quickly and tends to be short lived, so treat it as a fast, generous performer rather than a fixture.

Cultural Information

• Common Name: Californian lilac
• Fully Grown Height and Spread: 0.9m to 3m tall and 2m to 4m wide across this range of varieties. 'Blue Mound' is the compact, rounded one.
• Growth Habit: Rounded, mound forming evergreen shrub
• Perfect For: Mixed borders, beds, wall side planting, cottage and coastal gardens, large containers
• Foliage: Small, glossy, dark green leaves, held all year
• Flowering Time: Late spring to early summer, with a lighter repeat flush in autumn
• Planting Position: Full sun, sheltered from cold drying winds. Takes salt air in a milder coastal garden. Grows well in a large container.
• Soil Type: Well drained, moderately fertile soil. It will not tolerate waterlogging.
• Hardiness: Hardy in most of Britain, happiest with shelter from cold drying winds
• Maintenance: Low. Light trim after flowering, avoiding old wood.
• Seasonal Interest: Spring, summer and autumn
• Type: Evergreen flowering shrub