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Rhododendron catawbiense Roseum Elegans

Rhododendron x catawbiense Roseum Elegans
Rhododendron, Mountain Rosebay

4,8/5
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Arrived in good condition, very pleased.

Elaine, 21/10/2022

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This plant carries a 24 months recovery warranty

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Value-for-money
A hybrid rhododendron of beautiful stature, both hardy and tolerant of heat. Its flowering in large bunches of lilac speckled with carmine pink generally blooms in early June, on beautiful glossy foliage. This superb evergreen bush seduces with its robustness and lush appearance throughout the year. To be planted in acidic and moist soil, in a semi-shaded to slightly sunny location.
Flower size
6 cm
Height at maturity
2 m
Spread at maturity
2 m
Exposure
Partial shade, Shade
Hardiness
Hardy down to -18°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time February to May, September to October
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Flowering time June
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Description

Rhododendron catawbiense 'Roseum Elegans' is a vigorous and tall bush, with good cold resistance, but also heat resistance, a quality not so common in these plants. Derived from a particularly robust American botanical species, it fascinates in spring, when it almost disappears under a massive flowering of lavender-pink colour enhanced with bronze-red speckles on the throat. Gathered in generous clusters, its large flowers fade to pink over time, creating an inflorescence in a range of pink and mauve. With its lush appearance that could almost be described as exotic, this large "rhodo" allows for the creation of superb screens at the back of flower beds or majestic evergreen hedges.

 

Rhododendrons are plants of the Ericaceae family, just like heathers, preferring mostly limestone-free soils, with an acidic tendency, and humid climates. Rhododendron catawbiense is a botanical species with great development originating from the USA, more precisely from the mountain slopes of the southern Appalachians, which extend from Virginia to Georgia. It is characterized by remarkable resistance to cold and diseases that can affect these bushes. Frequently planted in American gardens, it has been hybridized with less hardy species from the Himalayas to produce some of our most spectacular rhododendrons.

'Roseum Elegans' is in the same vein as 'Grandiflorum', although its development is slightly less important. It forms a large bush with a slightly spreading rounded habit, as wide as it is tall. Its growth is relatively fast, reaching an average of 2m (6ft 7in) in all directions (sometimes up to 2.50m (8ft 2in) in width) under good conditions. The branches are abundantly covered with beautiful glossy foliage of dark olive green, composed of narrow, slightly arched, oblong-shaped evergreen leaves. The remarkably abundant flowering takes place from the end of May to mid-June. The large funnel-shaped flowers are gathered in large spherical clusters, containing up to 20 funnel-shaped flowers. The colour of the flowers when they bloom is a lavender-pink washed with fuchsia and speckled with red in the centre. Over time, they take on a more mauve hue and reveal a throat speckled with bronze occupied by long, curved stamens of deep pink colour. This heathland bush will find its place in partial shade in a cool, humus-rich, well-drained acidic soil. Rhododendron catawbiense 'Roseum Elegans' is hardy across a wide climatic range.

 

Rhododendron catawbiense 'Roseum Elegans' can be used as a solitary plant or in mass plantings, obviously in the company of other heathland plants. It can be associated with narrow and conical conifers for contrast of silhouettes, Chinese azaleas, complementing and tempering their warm tones, magnolias, Andromedas (Pieris), mountain laurels (Kalmia), Japanese maples with green or purple foliage... In a large garden in Brittany or Normandy, it can even compose a majestic hedge along a large alley, along with other large rhododendrons.

Rhododendron catawbiense 'Roseum Elegans' is a vigorous and tall bush, with good cold resistance, but also heat resistance, a quality not so common in these plants. Derived from a particularly robust American botanical species, it fascinates in spring, when it almost disappears under a massive flowering of lavender-pink colour enhanced with bronze-red speckles on the throat. Gathered in generous clusters, its large flowers fade to pink over time, creating an inflorescence in a range of pink and mauve. With its lush appearance that could almost be described as exotic, this large "rhodo" allows for the creation of superb screens at the back of flower beds or majestic evergreen hedges.

Rhododendrons are plants of the heath family, just like heathers, preferring mostly limestone-free soils, with an acidic tendency, and humid climates. Rhododendron catawbiense is a botanical species with great development originating from the USA, more precisely from the mountain slopes of the southern Appalachians, which extend from Virginia to Georgia. It is characterized by remarkable resistance to cold and diseases that can affect these bushes. Frequently planted in American gardens, it has been hybridized with less hardy species from the Himalayas to produce some of our most spectacular rhododendrons.

'Roseum Elegans' is in the same vein as 'Grandiflorum', although its development is slightly less important. It forms a large bush with a slightly spreading rounded habit, as wide as it is tall. Its growth is relatively fast, reaching an average of 2m (6ft 7in) in all directions (sometimes up to 2.50m (8ft 2in) in width) under good conditions. The branches are abundantly covered with beautiful glossy foliage of dark olive green, composed of narrow, slightly arched, oblong-shaped evergreen leaves. The remarkably abundant flowering takes place from the end of May to mid-June. The large funnel-shaped flowers are gathered in large spherical clusters, containing up to 20 funnel-shaped flowers. The colour of the flowers when they bloom is a lavender-pink washed with fuchsia and speckled with red in the centre. Over time, they take on a more mauve hue and reveal a throat speckled with bronze occupied by long, curved stamens of deep pink colour. This heathland bush will find its place in partial shade in a cool, humus-rich, well-drained acidic soil. Rhododendron catawbiense 'Roseum Elegans' is hardy across many climatic zones.

Rhododendron catawbiense Roseum Elegans in pictures

Rhododendron catawbiense Roseum Elegans (Flowering) Flowering
Rhododendron catawbiense Roseum Elegans (Foliage) Foliage

Plant habit

Height at maturity 2 m
Spread at maturity 2 m
Habit Irregular, bushy
Growth rate slow

Flowering

Flower colour mauve
Flowering time June
Inflorescence Corymb
Flower size 6 cm
Bee-friendly Attracts pollinators
Flowering description Abundant clusters

Foliage

Foliage persistence Evergreen
Foliage colour dark green
Foliage description Evergreen

Botanical data

Genus

Rhododendron

Species

x catawbiense

Cultivar

Roseum Elegans

Family

Ericaceae

Other common names

Rhododendron, Mountain Rosebay

Origin

Cultivar or hybrid

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Planting and care

Plant Rhododendron catawbiense 'Roseum Elegans' in partial shade, protected from cold and drying winds, in a fresh, humus-rich and light soil with an acidic tendency. Like all plants of the heath family, it does not tolerate limestone or alkaline soils, nor heavy soils saturated with water 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 collar 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. Consequently, they fear long periods of drought. This is why a humus-enriched soil and abundant watering during dry periods are recommended. 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 balls) when planting. Place a mulch of shredded pine bark at the base of the bush every spring to keep the soil cool while maintaining an acidic pH.

Maintenance consists of cutting off faded flowers in summer and cleaning the bush of 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 beetle" which does not often cause significant damage. However, you can treat it with carbofuran. Yellowing of leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron in the soil and causes premature death of the plant. While limestone is often the cause, poorly drained soil or a deeply planted root ball can also explain the phenomenon.

Planting period

Best planting time March to April
Recommended planting time February to May, September to October

Intended location

Suitable for Woodland edge, Undergrowth
Type of use Back of border, Free-standing, Hedge
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Amateur
Planting density 3 per m2
Exposure Partial shade, Shade
Soil pH Acidic
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Rich and well-drained

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
4,8/5
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