Azalea japonica Kirin
Azalea japonica Kirin
Azalea japonica Kirin
Azalea japonica Kirin
Azalea japonica Kirin
Rhododendron (Azalea) japonica Kirin
Japanese Azalea
The plant seems to have settled in successfully in the heather soil bed: already many flower buds and open flowers for this first spring.
Arnaud, 18/03/2026
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Description
The Kirin Japanese Azalea is a small evergreen shrub that belongs to the Rhododendron family. It is distinguished by its early, abundant, fresh, bright pink flowers which almost cover its foliage from March onwards. Its bell-shaped flowers are not large, but they are produced in profusion on a very neat, round shrub that will look wonderful in a window box on the terrace or as a border plant. Japanese azaleas merit the few changes needed to recreate the conditions they love: they thrive in partial shade, in consistently moist, lime-free soil. This very healthy variety is suitable for forcing and indoor cultivation.
The Hybrid Rhododendron Kirin is an old English variety bred by Ernest Wilson, back in 1922. It is part of a series of evergreen hybrids developed from the Rhododendron Kurume. This group of Azaleas, the result of 300 years of selection in Japan, takes its name from the Japanese town of Kirin. These small, leathery-leaved plants are renowned for their hardiness, adaptability, profusion of flowers and bright colours. Their complex genealogy probably includes the Asian species Rhododendron kaempferi , R . kiusianum , as well as various other species and ancient Japanese hybrids. They are best sheltered from extreme cold.
'Kirin' (also known as Daybreak) is a small, stocky variety with a very rounded habit. The plant will reach about 1 m (3 ft 4 in) in height and spread by the age of 10. Slow-growing, it will not exceed the size of 1.3 x 1.3m (4 ft 4 in x 4 ft 4 in) after many years. It sometimes flowers as early as February, but most often in March, or even at the beginning of April in colder regions. There are countless, small, bell-shaped flowers that look double, made up of a corolla of satiny pink petals, finely veined with deep pink and surrounded by a calyx of the same light, fresh pink. The centre of the flower is a deeper pink, with long stamens of the same colour. The flowers are gathered in terminal clusters of 3 to 5. The deep, vibrant, glossy green evergreen foliage consists of small, simple, oval leaves with smooth edges, arranged alternately on the branches. Azleas and Rhododendrons have a shallow root system, which should always be kept moist, but they dislike waterlogged soil which can suffocate the roots
Japanese azaleas thrive in a humid and cool climate, with distinct winters, planted in humus-rich, acid soil, such as ericaceous soil. They are very beautiful evergreen shrubs for borders or pots, attractive all year round. They harmonise beautifully with heathers, Japanese maples, or their relatives, Chinese Azaleas, which change colour with the seasons, as well as Japanese camellias and their graceful, often fragrant autumn-flowering cousins, Camellia sasanqua hybrids. This Kirin variety, forming a true ball of flowers early in the season, will look wonderful on the terrace or balcony, in a large, carefully chosen pot, with a suitable soil and watered with lime-free water. It will also delight bonsai enthusiasts!
Azalea japonica Kirin in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron (Azalea)
japonica
Kirin
Ericaceae
Japanese Azalea
Cultivar or hybrid
Planting and care
The Kirin Japanese Azale prefers rather shaded locations unlike the Chinese Azalea but its favorite position is in partial shade, sheltered from cold, dry and winds. This variety dislikes prolonged and severe frosts which can affect its early flowering. Protect it as soon as the thermometer drops below -10°C (14 °F) by storing it in a bright, unheated, frost-free room.
Plant it in an ericaceous, or humus-rich, well-drained, lime-free soil. When planting, make sure not to bury the root ball too deep, it should be level with the surface of the soil. Water copiously with lime-free water during dry periods, at least once a week during the first year. In spring, apply 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", not often causing significant damage. If the soil is chalky or poorly drained, or if the root ball is planted too deep, the leaves may turn yellow and eventually die.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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