Highlights

Evergreen Structure – Compact, low-growing shrub with glossy, dark green leaves and a bronze sheen for year-round garden interest.
Vivid Spring & Summer Blooms – Produces tight clusters of cobalt-blue flowers from late spring to early summer, attracting bees and pollinators.
Hardy & Low Maintenance – Thrives in sunny, well-drained spots and is fully hardy in UK gardens.
Ideal for Borders & Ground Cover – Spreading habit makes it perfect for edging paths, cascading over walls, or filling slopes.
Manageable Size – Grows up to 1.2m high and spreads to 2m, suiting a variety of garden spaces.
Wildlife Friendly – Nectar-rich flowers support local pollinators and beneficial insects.
Supplied in 9cm Pots – Ready to plant straight into your garden or containers.

We're offering you a 1 or 3 Ceanothus Blue Sapphire Plants for £7.99, saving you up to 38% off Thompson and Morgan's's price of £12.99 (correct as of 21.10.2025).

Ceanothus 'Blue Sapphire' – Evergreen Californian Lilac

Ceanothus 'Blue Sapphire' is a striking evergreen shrub, renowned for its compact, spreading habit and year-round glossy foliage. This variety is part of the Rhamnaceae family, commonly known as Californian Lilac, and brings both structure and vibrant colour to any garden.

Growth & Habit: Forms a low, arching mound with small, dark green leaves that shimmer with a subtle bronze tint.
Flowering: From late spring to early summer, expect dense clusters of vivid cobalt-blue flowers, creating a spectacular floral display. These blooms are a magnet for bees and other pollinators.
Size at Maturity: Reaches approximately 1.2m (4ft) in height and spreads to 2m (6.5ft), making it suitable for borders, ground cover, or cascading over walls.

Growing Guide

Sunlight: Prefers a sunny, sheltered position for best flowering.
Soil: Thrives in well-drained, moderately fertile soil. Avoid heavy, waterlogged ground.
Hardiness: Fully hardy throughout the UK (typically USDA zones 7-10).
Watering: Water regularly during the first growing season; once established, it is drought tolerant.

Planting & Care

When to Plant: Plant in spring or autumn for best results.
Pruning: Lightly prune after flowering to maintain shape and encourage bushier growth. Avoid heavy pruning into old wood.
Feeding: Mulch annually with well-rotted compost; fertiliser is generally not required for established plants.

Garden Design Ideas

Perfect for sunny borders, mixed planting schemes, or as ground cover on slopes.
Excellent companion for Mediterranean-style plants such as lavender, rosemary, and ornamental grasses.
Use to soften the edges of paths or to cascade over low walls for year-round interest.

FAQs

When is the best time to plant Ceanothus 'Blue Sapphire'?
Plant in spring or autumn when the soil is moist and workable.
How fast does this shrub grow?
Ceanothus 'Blue Sapphire' is moderately fast-growing, reaching its mature size in 3-5 years under optimal conditions.
What type of soil does it prefer?
This shrub prefers well-drained, moderately fertile soil and dislikes waterlogged conditions.