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.