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Caryopteris x clandonensis BLUE FOUNTAIN - Bluebeard

Caryopteris x clandonensis BLUE FOUNTAIN 'Novcaryfou'
Bluebeard, Blue Spirea, Blue Mist Shrub

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This Caryopteris offers clusters of lilac-blue flowers in late summer. Melliferous, they attract pollinators. It is a deciduous bush that forms an upright and compact clump, reaching up to 1.2 m in all directions. In the garden, it will find its place in a sunny flower bed or border, or even in a large pot on a terrace. Easy to grow, it withstands cold and drought well.
Flower size
1 cm
Height at maturity
1.20 m
Spread at maturity
1.20 m
Exposure
Sun
Hardiness
Hardy down to -18°C
Soil moisture
Dry soil, Moist soil
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Best planting time March, September
Recommended planting time March to May, September to November
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Flowering time August to September
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Description

The Caryopteris x clandonensis 'Blue Fountain' is a particularly vigorous variety that offers bouquets of lilac-blue flowers in late summer. Melliferous, they attract pollinating insects. In the garden, this beautiful deciduous shrub will find its place in a border or a large sunny bed. It also adapts well to being grown in a large pot on a terrace. Easy to care for, it resists cold and drought well.

From the Verbenaceae family, the Caryopteris x clandonensis is a hybrid obtained in the 1930s by Arthur Simmonds, secretary of the prestigious RHS (Royal Horticultural Society). Its parents are the Caryopteris incana, a small shrub native to Asia (China, Japan, Korea) and the C. mongolica, a dwarf shrub with large blue flowers that, as its name indicates, comes from Mongolia and China.
The 'Blue Fountain' variety is one of the most vigorous. It forms an upright bush with dense vegetation reaching 1.20 m in all directions. Its flowering usually appears in August and September. The small lilac-blue flowers are grouped in bouquets distributed along the stems. They have prominent stamens, giving them a feathery appearance. They delight bees and butterflies. Its slightly toothed leaves are dark green and turn yellow in autumn before falling.

You will appreciate the Caryopteris 'Blue Fountain' for its beautiful vegetation covered in blue flowers in late summer. It lends itself to many uses: as a standalone plant, in a border, a bed, or a large container. It is an easy-to-combine shrub that can be paired with other shrubs, roses, or perennials. Create a total blue look by combining it with Perovskia Blue Steel and perennial geranium Brookside. Its blue flowers will perfectly complement the yellow flowers of Coreopsis Full Moon Madness or Rudbeckia fulgida Goldsturm. White is also a safe bet with Decorosier Opalia or shrubby cinquefoil Bella Bianca.

Plant habit

Height at maturity 1.20 m
Spread at maturity 1.20 m
Habit Irregular, bushy
Growth rate fast

Flowering

Flower colour blue
Flowering time August to September
Inflorescence Cyme
Flower size 1 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Caryopteris

Species

x clandonensis

Cultivar

BLUE FOUNTAIN 'Novcaryfou'

Family

Verbenaceae

Other common names

Bluebeard, Blue Spirea, Blue Mist Shrub

Origin

Cultivar or hybrid

Product reference208410

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Planting and care

The Caryopteris x clandonensis 'Blue Fountain' appreciates the sun and light, humus-bearing, well-drained soils, without excess moisture. It tolerates limestone quite well. This bush withstands cold temperatures in well-drained soil (down to -20°C) and summer drought. Every year, prune it short (to 15 cm from the stump) in March, just before the vegetation restarts. This helps maintain its compact habit and promotes flowering on the new shoots.

Planting period

Best planting time March, September
Recommended planting time March to May, September to November

Intended location

Suitable for Meadow, Rockery
Type of use Border, Container, Slope
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Planting spacing Every 70 cm
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, Very well-drained, deep

Care

Pruning instructions Prune back to 15 cm from the ground in late winter or early spring to maintain a compact habit and promote the emergence of flowers on the new shoots.
Pruning Pruning recommended once a year
Pruning time March
Soil moisture Dry soil, Moist soil
Disease resistance Very good
Overwinter Can be left in the ground

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