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Caryopteris clandonensis Grand Bleu - Bluebeard

Caryopteris x clandonensis Grand Bleu®
Bluebeard, Blue Spirea, Blue Mist Shrub

4,6/5
31 reviews
4 reviews
4 reviews
2 reviews
0 reviews

Plant that tolerates partial shade and flowers from the second year of planting (in a pot). Melliferous and highly appreciated by bees. Requires little care.

Damien, 29/05/2022

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This plant carries a 24 months recovery warranty

More information

Value-for-money
Bush with clusters of small intense dark blue decorative flowers and fragrant foliage.
Height at maturity
1 m
Spread at maturity
1.50 m
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil moisture
Dry soil, Moist soil
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Best planting time March to April, September to October
Recommended planting time March to May, September to October
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Flowering time August to October
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Description

Caryopteris x clandonensis Grand Bleu is a bush with a dense and rounded habit that grows rapidly. Its late flowering follows the summer blooms. From August to October, clusters of deep blue flowers with long stamens emerge. These ornamental flowers measure 3 to 5mm (0.2in) in diameter. They are borne on upright stems.

 

The silvery grey leaves of the Blue Spirea are gathered in an erect tuft. This foliage is deciduous and emits a pleasant scent. They measure 3 to 5cm (2in) long. Caryopteris Grand Bleu has excellent hardiness. It is native to East Asia.

At maturity, it can reach a height of 1m (3ft 4in). It is a nectar plant that attracts butterflies. Its flowers can be cut to create lovely bouquets. You can cultivate this Caryopteris in shrub borders, as a standalone specimen, as a low hedge, as well as in containers and flower beds. It also thrives in mixed borders alongside perennials. It can be found in English cottages, urban gardens, as well as on terraces and balconies.

Caryopteris clandonensis Grand Bleu - Bluebeard in pictures

Caryopteris clandonensis Grand Bleu - Bluebeard (Foliage) Foliage

Plant habit

Height at maturity 1 m
Spread at maturity 1.50 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour blue
Flowering time August to October
Inflorescence Spike
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Caryopteris

Species

x clandonensis

Cultivar

Grand Bleu®

Family

Verbenaceae

Other common names

Bluebeard, Blue Spirea, Blue Mist Shrub

Origin

Cultivar or hybrid

Planting and care

Caryopteris x clandonensis Grand Bleu likes warm situations, which is why it should be placed in the sun. It is a bush that is not demanding on the nature of the soil, as long as it is well-drained. It withstands limestone and drought well. Plant it in spring by mixing your garden soil with compost. If you are in a cold region, where summers are cool and winter temperatures can be below -15°C (5 °F), place it against a south-facing wall. Plant your young plants with a spacing of 60cm (23.6in) between them. After planting, water generously once or twice a week to allow for establishment. It is an easy plant to grow.

Planting period

Best planting time March to April, September to October
Recommended planting time March to May, September to October

Intended location

Suitable for Meadow, Rockery
Type of use Border, Container, Hedge
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Beginner
Exposure Sun
Soil pH Any
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, Well-drained soil

Care

Pruning instructions At the end of winter (March-April), prune half or even two-thirds of the branches with shears, to promote the next flowering and maintain a dense habit.
Pruning Pruning recommended once a year
Pruning time March to April
Soil moisture Dry soil, Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,6/5

Mediterranean shrubs

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