Azalea japonica Ho Oden
Azalea japonica Ho Oden
Azalea japonica Ho Oden
Azalea japonica Ho Oden
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Anne-Laure H.
Azalea japonica Ho Oden
Anne-Laure H. • 95 FR
Anne-Laure H.
Azalea japonica Ho Oden
Anne-Laure H. • 95 FR
Nathalie L.
Azalea japonica Ho Oden
Nathalie L. • 78 FR
Danièle A.
Azalea japonica Ho Oden
Danièle A. • 31 FR
Azalea japonica Ho Oden
Rhododendron (Azalea) Ho Oden
Japanese Azalea
didn't grow much but flowered well, be careful it needs a lot of water
Vanessa , 18/09/2025
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Description
The 'Ho Oden' Japanese Azalea, formerly known as Azalea japonica, is an evergreen bush that forms a spreading ground cover bush that stands out from other varieties by the colour of its flowers, tinted with soft pink and spotted with intense violet on the upper petals.
Originally from Japan, the 'Ho Oden' Azalea forms a compact bush with a rounded habit that reaches 70 cm (27.6 in) in width at maturity. Its elongated and glossy evergreen leaves are dark green all year round. During the months of April and May, the bush produces numerous 5 cm (2 in) trumpet-shaped flowers, coloured with pale pink spotted with intense violet, grouped in generous clusters.
Hardy down to -12°C, the Japanese Azalea 'Ho Oden' requires a bright exposure but without direct sunlight and should ideally be planted in partial shade, in a location protected from cold and dry winds. With a slow growth, this small acid-loving bush prefers fresh, humus-bearing and well-drained soil.
The 'Ho Oden' Azalea dresses up heather beds all year round and brings gardens to life in spring with its numerous colourful flowers. Plant it on a slope, in a shady rockery, or as a border plant alongside Pieris, Heathers, Kalmias, and Japanese Maples.
Split into two horticultural groups, the Rhododendron genus on one hand includes Chinese and Japanese Azaleas with small evergreen or deciduous leaves, and 5 stamens per flower, and on the other hand, Rhododendrons with large, evergreen, glossy leaves and flowers with more than 10 stamens. Although highly debatable from a botanical point of view, this classification is still widely used by horticulture professionals.
Azalea japonica Ho Oden in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron (Azalea)
Ho Oden
Ericaceae
Japanese Azalea
Cultivar or hybrid
Planting and care
Plant the Japanese Azalea Ho Oden in partial shade, protected from cold and drying winds, in fresh, humus-bearing and light soil, with a tendency towards acidity. Like all plants that prefer acidic soil, it cannot tolerate limestone or heavy soil that becomes waterlogged in winter. Dig a hole three times larger than the pot. Soak the root ball in non-limestone water and plant the bush at the base level in a mixture composed of 1/4 turf, leaf compost, gravel or pumice, and loam. Water generously and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system, which makes them susceptible to long periods of drought. Therefore, it is recommended to enrich the soil with humus and provide abundant watering during dry periods. Additionally, their root system is not very strong, which is why it is essential to lighten heavy soils with draining materials (gravel, pumice, clay pellets) during planting. Apply a mulch of crushed pine bark around the base of the bush every spring to maintain soil moisture and acidity. Maintenance involves removing faded flowers in summer and clearing away dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils, which eat the edges of the leaves and rootlets, as well as by the infamous 'rhododendron beetle', which rarely causes significant damage. You can treat them with carbofuran. Yellowing of the leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron in the soil and can lead to premature plant death. While limestone is often the cause, poorly drained soil or a deeply planted root ball can also contribute to this phenomenon.
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).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
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.
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