Ceanothus 'Cool Blue' is a stunning compact evergreen shrub, commonly known as California Lilac, prized for its profusion of rich blue flower clusters that smother the plant in late spring and early summer. With its neat, bushy habit and small, glossy dark green leaves, this hardy shrub provides year-round structure and interest in the garden. When in full bloom, it creates a striking display that is highly attractive to bees, butterflies and other pollinating insects.

Supplied in a 3 litre pot, this plant is well-established and ready for planting out in borders, against sunny walls, or in large containers on a sheltered patio.

Key Features:

• Masses of vivid blue flower clusters in late spring and early summer


• Compact, bushy evergreen habit with glossy dark green foliage


• Ideal for sunny borders, wall-side planting or large containers


• Highly attractive to bees, butterflies and pollinators


• Low maintenance once established


• Supplied in a 3 litre pot, well-rooted and ready to plant

Planting and Care:

Plant in a sunny, sheltered position in well-drained soil. Ceanothus 'Cool Blue' thrives in lighter soils and does not enjoy heavy, waterlogged conditions. A south or west-facing wall or fence provides ideal protection from cold, drying winds. Water regularly during the first growing season to help the root system establish. Once settled, this shrub is fairly drought-tolerant. Prune lightly after flowering to maintain shape – avoid cutting back into old wood.

Cultural Information:

• Botanical Name: Ceanothus 'Cool Blue'


• Common Names: California Lilac, Ceanothus


• Classification: Evergreen Shrub


• Fully Grown Height & Spread: 1 m – 1.5 m × 1 m – 1.5 m


• Growth Habit: Compact, Bushy Evergreen Shrub


• Perfect for: Sunny Borders, Wall-Side Planting, Containers, Coastal Gardens


• Flowering Time: Late Spring to Early Summer


• Flower Colour: Rich Blue


• Planting Position: Full Sun, Sheltered


• Soil Type: Well-Drained, Light to Medium


• Attracts: Bees, Butterflies & Pollinating Insects


• Hardiness: Hardy (RHS H4)


• Type: Hardy Evergreen Shrub


• Foliage: Small, Glossy, Dark Green Evergreen Leaves

Notes: This plant is the Cool Blue variety of Ceanothus, known for its particularly vivid blue flowers and compact growing habit, making it well-suited to smaller gardens and container planting.