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Ceanothus 'Skylark' – Pyramid – 2 Litre Pot – 60cm

Ceanothus 'Skylark'

Supplied in a 2 litre pot | Approximate supplied height: 60cm | Pyramid form

Plant Highlights: Rich, deep blue flower clusters • Glossy evergreen foliage • Abundant late spring and early summer flowering • Naturally bushy growth • Attractive to bees and other pollinators

Overview

Ceanothus 'Skylark', commonly known as Californian lilac, is an evergreen flowering shrub prized for its remarkable display of deep blue blooms. From late spring into early summer, generous clusters of small, intensely coloured flowers appear against finely toothed, glossy dark green leaves. Its dense, bushy growth creates a leafy backdrop throughout the year, while the vivid flowers bring a particularly strong splash of colour to sunny garden spaces.

This pyramid-form specimen offers a defined shape for a sheltered patio, entranceway or sunny border. Although 'Skylark' is relatively compact compared with some larger Ceanothus varieties, it can develop into a substantial rounded shrub if allowed to grow naturally. Its combination of evergreen foliage, distinctive blue flowers and value to visiting pollinators makes it particularly rewarding in a well-drained, sunny position.

Why We Love It

• Remarkable blue flowers: Dense clusters of deep blue blooms create a vivid display against the dark green foliage.

• Evergreen presence: Small, glossy leaves remain on the plant throughout the year, providing colour and structure beyond the flowering season.

• Pollinator appeal: The nectar- and pollen-bearing flowers are a valuable seasonal food source for bees and other visiting insects.

• Distinctive presentation: The supplied pyramid form gives the plant an upright, shaped appearance that works particularly well as a focal point.

• Award-winning cultivar: 'Skylark' has received the RHS Award of Garden Merit in recognition of its garden qualities.

Plant Details

Attribute	Information
Botanical Name	Ceanothus 'Skylark'
Botanical Synonym	Ceanothus thyrsiflorus 'Skylark'
Common Name	Californian Lilac 'Skylark'
Plant Type	Evergreen flowering shrub
Foliage	Small, glossy, dark green leaves with finely toothed edges
Flowers	Numerous small, deep blue flowers arranged in open clusters
Flowering Period	Late spring to early summer, generally May to June
Seasonal Interest	Spring and early summer flowers; evergreen foliage throughout the year
Growth Habit	Naturally dense, bushy and rounded; supplied in pyramid form
Position	Full sun, preferably south- or west-facing
Exposure	Sheltered from strong, cold winds
Soil	Fertile, well-drained loam or sandy soil; tolerates a range of soil pH conditions
Mature Height	Approximately 1.5–2.5m if allowed to develop naturally
Mature Spread	Approximately 1.5–2.5m if allowed to develop naturally
Hardiness	RHS H4; generally tolerates approximately -10°C to -5°C in suitable conditions
Wildlife Value	Flowers provide nectar and pollen for pollinating insects
Pruning	Light shaping immediately after flowering; avoid cutting heavily into old wood

Growing Guide

Position

Plant in full sun for the strongest flowering display. A sheltered south- or west-facing position is particularly suitable, especially near a wall that offers some protection from cold winds.

Avoid frost pockets, exposed windy corners and heavily shaded positions. Although Ceanothus can tolerate some light shade, 'Skylark' generally flowers most generously when it receives plenty of direct sunlight.

Allow adequate space for its eventual growth if planting in the ground, particularly where the natural rounded habit is to be retained.

Watering

Water thoroughly after planting and continue watering as needed during the first growing season while the roots establish. Allow the soil surface to begin drying between waterings rather than keeping the ground constantly saturated.

Once established in well-drained garden soil, 'Skylark' can tolerate periods of dry weather and generally needs additional watering only during prolonged dry spells.

Container-grown plants require closer attention, particularly during warm, windy weather. Check the compost regularly and water thoroughly when it begins to dry, allowing excess water to drain away.

Soil and Compost

Ceanothus 'Skylark' grows best in moderately fertile, freely draining soil. It tolerates acidic, neutral and moderately alkaline conditions, although shallow chalky soils can sometimes cause foliage yellowing.

Good drainage is especially important in Irish gardens, where prolonged winter rainfall can leave heavy soils saturated. Avoid planting in compacted clay or areas where water collects after rain.

For containers, use a quality loam-based compost with added drainage material where needed. Choose a pot with generous drainage holes and avoid leaving it standing in water.

Hardiness and Winter Care

'Skylark' carries an RHS H4 hardiness rating, indicating tolerance of approximately -10°C to -5°C under suitable growing conditions. It is well suited to many sheltered Irish gardens, although exposure, prolonged frost and winter waterlogging can affect its performance.

A sunny position protected from strong, cold winds is particularly beneficial. In colder or exposed gardens, growing near a sheltered wall can offer additional protection.

Container-grown specimens are more vulnerable to freezing roots than established plants in the ground. During severe cold, move pots to a sheltered position or insulate the container while maintaining good drainage.

Pruning and Pyramid Shape Maintenance

Ceanothus 'Skylark' flowers mainly on growth produced during the previous season, so pruning should be carried out immediately after flowering, generally in early summer.

Lightly trim the current season's soft growth where needed to maintain the supplied pyramid outline. Remove dead, damaged or crossing stems and make small adjustments to preserve an even shape.

Avoid severe pruning into old, leafless wood, as evergreen Ceanothus may not regenerate reliably from hard cuts.

The pyramid form will require occasional shaping as the plant grows. Without regular trimming, it will gradually develop towards its natural bushy, rounded habit.

Feeding and General Care

Ceanothus generally requires little additional feeding when planted in reasonably fertile garden soil. Avoid excessive high-nitrogen fertiliser, which can encourage leafy growth at the expense of flowers.

Apply an organic mulch around garden-grown plants to help regulate soil moisture and suppress weeds, keeping it clear of the main stem.

Check shaped plants occasionally for uneven growth and maintain the outline with light pruning at the appropriate time of year.

Perfect For

• Sunny entranceways: The supplied pyramid form creates a defined feature beside a sheltered doorway or garden path.

• Patio containers: Offers evergreen foliage and a vivid seasonal flower display, provided drainage and winter protection are managed carefully.

• South- or west-facing borders: The rich blue flowers stand out against silver foliage, ornamental grasses and other sun-loving shrubs.

• Courtyard gardens: A useful flowering feature where sunlight, shelter and well-drained growing conditions are available.

• Pollinator-friendly planting: The late spring and early summer flowers provide nectar and pollen when bees and other insects are active.

Good to Know

Although supplied in a pyramid form, Ceanothus 'Skylark' is naturally a bushy shrub rather than a permanently narrow, upright plant. Maintaining its shaped appearance requires careful light trimming after flowering. If left unpruned, it can eventually grow considerably wider than its original supplied outline.

Good drainage is essential, particularly during wet Irish winters. Ceanothus does not respond well to prolonged waterlogging or severe pruning into mature wood, so choosing the right position from the beginning is important.

Product Information

• Product: Ceanothus 'Skylark' – Pyramid

• Cultivar: 'Skylark'

• Pot Size: 2 litre

• Approximate Supplied Height: 60cm

• Supplied Form: Pyramid

• Product Barcode / SKU: 8719323149083