Rhododendron yakushimanum Easydendron Bohlkens Laura
Rhododendron yakushimanum Easydendron Bohlkens Laura
Rhododendron yakushimanum Easydendron® Bohlken's Laura®
Yakushima Rhododendron, Yakushimanum Rhododendron
I have a slight reservation about this product. Its leaves are pale, even yellow for some, while others are falling. Before giving a definitive opinion, I will wait until next spring to see how the plant has come through the winter.
Jean marc, 09/10/2025
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Description
Rhododendron yakushimanum Easydendron Bohlken's Laura is a compact hybrid, appreciated for its flowers of a beautiful pure yellow colour, without markings. Its very abundant flowering is perfectly highlighted by its small shiny dark green leaves. This rhododendron is part of the Inkharo range (Easydendron), which includes hybrids that are more tolerant of limestone and clay in the soil. It forms a bright and floriferous bush, perfect for easily enhancing a small shady or slightly shaded space in the garden, in a wide range of soils.
Rhododendrons encompass over 800 species from the Ericaceae family, cultivated for the beauty of their impressive flowering. The history of the Inkharo Rhododendrons, slightly revolutionary plants recently presented at the Chelsea Flower Show, began in Germany over 20 years ago. The discovery of a rhododendron naturally growing in a chalk quarry made it possible to consider grafting different varieties onto its extraordinary root system. The shrubs obtained by this method tolerate a wide range of soils with a pH ranging from 4.5 to 7.5, provided they are loose, fertile, moist, and not excessively limestone-rich. In summary, any soil that is suitable for hydrangeas. The Rhododendron yakushimanum Bohlken's Laura forms a dense bush with a rounded habit of about 1m (3ft) in height and 1.2m (4ft) in width after 10 years. Its growth is rather slow. Its small evergreen, leathery, shiny dark green leaves are elliptical in shape and cover the plant well. The flowering takes place in May. Grouped in corymbs, the red flower buds open into large funnel-shaped flowers, about 10cm (4in) wide, of a beautifully soft and pure yellow colour, with brown anthers.
Like all yakushimanum hybrids, affectionately nicknamed "yak rhodos" by specialists, the Rhododendron yakushimanum Easydendron Bohlken's Laura is quite hardy. This one is hardy down to -20°C (-4°F). Even though they prefer a semi-shaded exposure, these hybrids tolerate the sun as long as it is not scorching (morning sun) and their base remains moist. With its abundant and vividly coloured flowering, this "rhodo" easily enhances a small, slightly shaded space in the garden, in the company of ferns, blue or variegated hostas, Pieris, Azaleas, and Japanese Maples, or other rhododendrons from the same group to create superb patchworks of textures and colours in spring. Versatile, you can also plant it alongside many other flowering shrubs, not necessarily ericaceous: hydrangeas, mock oranges, Japanese quinces, buddleias, abelias, or autumn camellias. Japanese Anemones Japanese Anemones will also be good companions, as well as bugbanes and foxgloves in woodland areas. Growing in containers requires regular watering.
Rhododendron yakushimanum Easydendron Bohlkens Laura in pictures
Plant habit
Flowering
Foliage
Planting and care
Plant Rhododendron yakushimanum Easydendron Bohlken's Laura in a partially shaded position, protected from cold and drying winds, in moist, loose, fertile soil. It will prefer a slightly alkaline, neutral or acidic soil; any soil which is suitable for a hydrangea. Dig a hole three times larger than the pot. Soak the root ball in water and plant the bush at the collar level, in a nourishing mix composed of leaf compost, gravel or pumice, and loam or topsoil, as Rhodos Inkarho are hungry plants. Water generously and keep the soil moist in summer. Azaleas and Rhododendrons have a relatively shallow root system, so they are sensitive to long periods of drought. Therefore, it is advisable to enrich the soil with humus and water abundantly during dry periods. Apply a layer of wood chips or mulch around the base of the bush every spring to maintain soil moisture and slightly acidic pH. Maintenance consists of removing faded flowers after flowering and removing any dead branches.
Azaleas and Rhododendrons can sometimes be attacked by weevils, which eat the edges of leaves and rootlets, as well as the famous "rhododendron caterpillar," which rarely causes significant damage. There are effective natural solutions against weevils. Yellowing of leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron from the soil and can lead to premature death of the plant. While limestone is often the cause, poorly drained soil or deep planting 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).
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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