Dwarf Rhododendron - Rhododendron impeditum
Dwarf Rhododendron - Rhododendron impeditum
Dwarf Rhododendron - Rhododendron impeditum
Dwarf Rhododendron - Rhododendron impeditum
Rhododendron Rhododendron impeditum
Rhododendron hybride
A bit of tidying up needed upon arrival (a few broken or leafless branches). Root system impeccable, very good recovery this spring despite planting in a very windy spot. Very satisfied!
Alexis, 29/03/2026
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This plant carries a 24 months recovery warranty
More information
We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
Rhododendron impeditum is a dwarf bush with small evergreen leaves of dark green colour and shiny texture. This spring flowering variety will surprise you with its charming blue-violet flowers. It will enhance your borders and terraces all year round.
Resembling an azalea in its foliage and flowers, Rhododendron impeditum forms a dense spreading habit, reaching 50cm (20in) in height and 60cm (24in) in width at maturity. Its small shiny dark green evergreen leaves are elliptical in shape, slender, and tough with prominent central veins. During the months of March and April, this bush offers corymbs with groups of 3 to 6 blue-violet flowers. A new attraction in your garden!
Very hardy down to -20°C, Rhododendron impeditum likes a sunny or semi-shaded exposure. With slow growth, this bush prefers moist, humus-rich and well-drained soils with acidic tendencies.
Rhododendron impeditum will be ideal for borders, pots, or as a standalone plant. It will decorate your garden all year round and animate it with its numerous blue-violet flowers in spring. Plant it on a slope or rockery alongside Magnolias, Pieris, Heathers, Kalmias, Azaleas, and Japanese Maples.
Dwarf Rhododendron - Rhododendron impeditum in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron
Rhododendron impeditum
Ericaceae
Rhododendron hybride
Cultivar or hybrid
Planting and care
Plant Rhododendron impeditum in a sunny or semi-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 does not tolerate alkaline soils or heavy soils saturated with water in winter. Dig a hole three times larger than the pot. Soak the root ball in non-alkaline water and plant the bush at the level of the collar, 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. Therefore, they are sensitive to long periods of drought. This is why it is recommended to enrich the soil with humus and provide abundant watering during dry periods. Additionally, this weak root system makes it necessary to lighten heavy soils with draining materials (gravel, pumice, clay pellets) at planting. Apply a mulch of shredded pine bark around the base of the bush every spring to maintain soil moisture and preserve an acidic pH. Maintenance involves only removing faded flowers in summer and pruning out dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of leaves and rootlets, as well as by the famous "rhododendron caterpillar," which rarely causes significant damage. Yellowing of leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron from the soil and can lead to premature death of the plant. While alkaline soil is often the cause, poorly drained soil or deep planting of the root ball 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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