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Azalea mollis Demoiselles de Boutiguery Kassia

Rhododendron (Azalea) x mollis Demoiselles de Boutiguery ® Kassia
Chinese Azalea, Soft Rhododendron

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Value-for-money
A hybrid azalea developed in France, with a compact habit and and an abundance of flowers. In spring, the shrub is adorned with superb yellowy-white flowers, with a few dashes of pink for a stunning effect. This plant will thrive in humus-rich, lime-free soil that is well-drained but stays slightly damp. It can also easily be grown in a container on a terrace. Plant in a sunny spot but one that is not too hot. This deciduous variety is very hardy.
Flower size
6 cm
Height at maturity
1.20 m
Spread at maturity
1 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time March to May, September to October
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Flowering time May
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Description

The Chinese Azalea 'Demoiselles de Boutiguery Kassia' is a recent French variety, selected for its small size and floriferous habit. In spring, the shrub blooms brightly, with clusters of yellow and white flowers covering its foliage. Here and there, a little hint of pink appears among the petals, giving the flowers a touch of romance. Unlike Japanese Azaleas, this plant is deciduous and very hardy. The Demoiselles de Boutiguery range is extremely interesting for its abundance of flowers. Even in their early years, these shrubs bear numerous flower buds, putting on a spectacular show in spring. Too little known and too little used, Chinese azaleas are very graceful plants with many wonderful qualities. They grow in lime-free soil. They are a must for the garden or in a large pot on the terrace!

Azalea is a horticultural term still commonly used, but in botanical terms, they are actually Rhododendrons, whose flowers have 5 stamens instead of 10. Plants from the Ericaceae family, just like heathers, strawberry trees or blueberries, they mostly prefer lime-free, acid soil and damp climates. The deciduous Chinese Azaleas, have fewer requirements than the evergreen Japanese Azaleas: they are very hardy, tolerate the sun and heat better, and even occasionally dry soil, depending on the hybrids. Nevertheless, they will be at their best in cool climates, with distinct winters, planted in humus-rich, fertile, lime-free soil.


The 'Demoiselles de Boutiguery' series is the work of a Breton family, settled on the Domaine de Boutiguery, whose park was designed by the Bühler brothers, renowned landscape designers  (they are responsible for the layout of the Tête d'Or park in Lyon, the Thabor park in Rennes and the Courson Castle park in Essonne). Christian de la Sablière and his daughter Virginie work there constantly hybridising Rhododendrons in search of new flower colours.

Azalea 'Kassia' is a variety whose unusual flowers combines different colours in perfect harmony. Predominantly white, these luminous flowers have a corolla made up of 5 petals, one of which is a beautiful shade of yellow, more intense and even slightly orange in the centre. The 2 petals on either side (and sometimes the last 2) are a light, soft pink. This rare combination in Azaleas is more common in Irises and certain orchids. A few stamens spring from the centre of the corolla and arch gracefully upwards towards the yellow petal. They too are the same colour, adding to the beauty and harmony of the flowers.

Its deciduous foliage is made up of simple, oval-lanceolate, smooth-edged leaves arranged alternately on the branches. They vary in length from 5 to 10 cm (2 to 3.9 in). Their beautiful, bright green colour is a perfect backdrop for the magnificent flowers, which stand out clearly against the foliage.

Azaleas and Rhododendrons have a shallow root system that always needs to be kept moist, but they also dislike waterlogged soil which would suffocate the roots.

This Chinese Azalea 'Kassia' can be planted on its own in the smallest of gardens, but will also look lovely in a bed of spring flowers. Plant it with Japanese Pieris, a compact shrub that produces a multitude of bells at the start of the season and, depending on the variety, very decorative young red foliage. The light shade of a purple Japanese maple  (Acer palmatum Atropurpureum)) will create a superb contrast of foliage colours, while adding a Japanese touch to your décor. You might also consider perennials such as Heuchera citronelle, , with its surprising yellow-green leaves, which will look great at the foot of your Azalea.

Plant habit

Height at maturity 1.20 m
Spread at maturity 1 m
Habit Irregular, bushy
Growth rate slow

Flowering

Flower colour two-tone
Flowering time May
Inflorescence Corymb
Flower size 6 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Rhododendron (Azalea)

Species

x mollis

Cultivar

Demoiselles de Boutiguery ® Kassia

Family

Ericaceae

Other common names

Chinese Azalea, Soft Rhododendron

Origin

Cultivar or hybrid

Product reference184410

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Planting and care

The Chinese Azalea Demoiselles de Boutiguery Kassia thrives a sunny location, unlike the Japanese Azalea, but its favourite position is in partial shade, or east-facing for the morning sun, especially in very sunny or hot regions. Plant it in an ericaceous or humus-rich, well-drained, lime-free soil that does not dry out in summer.

Make sure not to plant the root ball too deep, it should be level with the surface of the soil. Water copiously with alkaline-free water during dry periods, at least once a week in the first year. In spring, apply a fertilizer for ericaceous plants. Pruning is not essential but it is a good idea to prune lightly after flowering to keep the plant looking neat. Remove spent flowers to encourage new growth. The Azalea suffers from very few diseases when well-established outdoors. It can be attacked by weevils that eat the edges of the leaves and rootlets, and by the famous "Rhododendron lace bug", though not often causing significant damage. If the soil is chalky or poorly drained, or if the rootball is planted too deep, the leaves may turn yellow and eventually die.

Planting period

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

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Container
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 3 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Rich and very well-drained

Care

Pruning instructions Simply pinch or snip out the faded flowers so as not to damage the young buds. This azalea does not require pruning.
Pruning Pruning recommended once a year
Pruning time June
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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