Rhododendron griersonianum Winsome
Rhododendron griersonianum Winsome
Rhododendron griersonianum Winsome
Rhododendron x griersonianum Winsome
Rhododendron
Very pretty plant that perfectly brightens up a shady area of the garden with its colorful flowers.
IsaL, 21/05/2025
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Description
Rhododendron 'Winsome' is a dwarf evergreen bush that can enhance the garden all year round. It will surprise you with its spring flowering in the form of dark pink bells. This remarkable bush will be ideal for flowerbeds or containers.
Derived from the crossing between Rhododendron 'Hummingbird' and Rhododendron 'Griersoniamum', the Rhododendron 'Winsome' forms a dense bush with a rounded habit, reaching 80cm (32in) in height and width when fully grown. In spring, its shoots will have a coppery colour. Its evergreen leaves are dark green, elliptical in shape, leathery and elongated. They have prominent central veins. During the months of April and May, it produces clusters of 6 to 12 beautiful dark pink flowers. The Rhododendron 'Winsome' will bring beautiful flowers to your small shaded spaces.
Rhododendron 'Winsome' is hardy down to -12°C. It prefers a semi-shaded exposure. It has a slow growth rate and thrives in moist, humus-rich, well-drained soils with a slightly acidic tendency.
Rhododendron 'Winsome' will be ideal for border planting or container gardening. It will enhance your garden all year round and bring it to life. In spring, it will offer you dark pink bell-shaped flowers. Plant it on a slope or rockery alongside ferns, Pieris, heathers, Kalmias, Azaleas and Japanese Maples.
Rhododendron griersonianum Winsome in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron
x griersonianum
Winsome
Ericaceae
Rhododendron
Cultivar or hybrid
Planting and care
Plant the 'Winsome' Rhododendron in a partially shaded position, protected from cold and drying winds, in a moist, humus-rich and light soil with an acidic tendency. Like all plants that prefer acidic soil, it cannot tolerate limestone or heavy soils that become waterlogged in winter. Dig a hole three times the volume of the pot. Soak the root ball in non-limestone water and plant the bush at the level of the collar, in a mixture composed of leaf compost, gravel or pumice, and loam. Water thoroughly and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system and therefore are susceptible to long periods of drought. It is recommended to enrich the soil with humus and provide abundant watering during dry periods. Additionally, their root system is not very strong, so 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 acidic pH. Maintenance involves removing faded flowers in summer and cleaning dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of leaves and rootlets, as well as the famous "rhododendron beetle," which rarely causes severe damage. Yellowing of the leaves (chlorosis) in Rhododendrons indicates poor iron assimilation from the soil and can lead to premature death of the plant. While limestone is often the cause, poorly drained soil or deeply planted root balls 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).
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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