Rhododendron yakushimanum Barbarella
Rhododendron yakushimanum Barbarella
Rhododendron yakushimanum Barbarella
Rhododendron yakushimanum Barbarella
Rhododendron yakushimanum Barbarella
Yakushima Rhododendron, Yakushimanum Rhododendron
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Description
Rhododendron yakushimanum 'Barbarella' is a compact bush hybrid that stands out with its unusually coloured flowering, mixing shades of orange, pink, pale red, and soft yellow. It is abundant, even on a young plant, and its large flowers are perfectly highlighted by small shiny dark green leaves. A bright and floriferous bush, with a sturdy architecture reminiscent of Japanese art, was awarded in Munich in 2005. Perfect for easily improving a small shaded area of the garden.
Rhododendrons are plants from the Ericaceae family, just like heathers, preferring mostly limestone-free soils, with an acidic tendency and humid climates. The Rhododendron yakushimanum 'Barbarella' was obtained in Germany in 1984. It forms a dense bush with a rounded habit, reaching about 1.20 m (4 ft) in all directions at maturity. Its growth is rather slow, generally reaching 65 cm (26 in) at the age of 10. Its small, shiny, evergreen, leathery leaves are elliptical in shape and cover the plant well. Flowering occurs in May. Grouped in corymbs, the light red-pink floral buds open into large funnel-shaped flowers, 10 cm (4 in) wide. The petals' undersides are tinged with orange-red, becoming pink at the edges. The interior of the flower is light yellow, bordered with salmon pink.
Like all yakushimanum hybrids, affectionately nicknamed "yak rhodos" by specialists, Rhododendron 'Barbarella' is hardy down to -15°C (5°F) and even -20°C (1°F). Although they prefer a semi-shaded exposure, these hybrids can tolerate the sun as long as it is not scorching (morning sun) and their base remains moist. 'Barbarella', with its abundant and brightly coloured flowering, will easily brighten a small, slightly shaded area of the garden, alongside ferns, blue or variegated hostas, Pieris, Azaleas, Japanese Maples, or other rhododendrons from the same group to create superb patchworks of textures and colours in spring. Container cultivation requires regular watering with non-limestone water and specific fertilizers for ericaceous plants.
Rhododendron yakushimanum Barbarella in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron
yakushimanum
Barbarella
Ericaceae
Yakushima Rhododendron, Yakushimanum Rhododendron
Cultivar or hybrid
Planting and care
Plant Rhododendron yakushimanum 'Barbarella' in a semi-shaded position, protected from cold and drying winds, in a moist, humus-rich and light soil, with a tendency towards acidity (pH between 4.5 and 6). Like all plants of the heather family, it does not tolerate limestone soils, drought, heatwaves, or heavy soils saturated with water in winter. If the soil remains moist in summer, this rhododendron can also tolerate exposure to non-burning sun.
Dig a hole three times larger than the pot. Soak the root ball in non-limestone water and plant the bush at the collar level, in a mixture composed of leaf compost, gravel or pumice, and loam. Water generously and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system, so they are sensitive to long periods of drought. That's why it is recommended to have humus-rich soil and provide abundant watering during dry periods. In addition, this root system is not very strong, which is why it is essential to lighten heavy soils with draining materials (gravel, pumice, clay pellets) when planting. Apply a mulch of shredded pine bark around the base of the bush every spring to keep the soil cool while maintaining an acidic pH.
Maintenance consists of removing faded flowers in summer and pruning out any dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of leaves and rootlets, as well as the notorious "rhododendron beetle," which does not often cause significant damage. Effective biological solutions are now available against weevils. Yellowing of the leaves (chlorosis) in Rhododendron indicates poor assimilation of iron in the soil and can lead to premature death of the plant. While limestone (in the soil or watering water) is often the cause, poorly drained soil or deeply planted root balls can also explain the 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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