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Rhododendron Lilac Dufthecke Inkarho - Rhododendron, Azalea

Rhododendron INKARHO® Lila Dufthecke
Rhododendron, Azalea

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A medium-sized Rhododendron, wider than it is tall, with very pretty lilac flowers, slightly coppery and purplish, which are also fragrant. The Rhododendrons in the Inkarho range are grafted, and therefore more tolerant of the soil than traditional varieties (pH 4.5 to 6, tolerating up to 7.5). This one is also accommodating in many ways: it lends itself to pruning, grows vigorously, is perfectly hardy (down to -24°C), and can tolerate some sun. Plant it without hesitation in loose soil, without excess limestone though.
Flower size
6 cm
Height at maturity
1.50 m
Spread at maturity
2 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to May, September to October
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Flowering time May to June
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Description

The Rhododendron Inkarho Lilac Dufthecke is part of a new series of varieties with fragrant flowers, the "Scented Hedge" series, grafted like all Inkharo rhododendrons onto a plant much more tolerant of clayey, loamy or slightly chalky soils. Lilac Scented Hedge is an evergreen bush, wider than tall, with vigorous growth, bearing a profusion of spring flowers in a distinguished lilac shade, lighter in the centre and darker at the edges, with hints of purple-pink and a slight coppery throat. Hone-producing with a subtle yet present fragrance, it's a new generation of Rhododendron that challenges our preconceptions; it is as tolerant as a hydrangea, hardy and easy to grow.

Rhododendrons encompass over 800 species of the Ericaceae family, cultivated for the beauty of their flowering. The history of Inkharo Rhododendrons, somewhat revolutionary plants recently introduced at the Chelsea Flower Show, began in Germany over 20 years ago. The discovery of a rhododendron naturally growing in a chalk quarry led to the grafting of different varieties onto its extraordinary root system. Shrubs produced 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 chalky. In summary, soil suitable for hydrangeas. Lilac Scented Hedge forms a medium-sized bush with a spreading habit. Its growth is vigorous, usually reaching 1.50 m in height and 2 m in width at maturity. Its beautiful dark green, evergreen leaves are elliptical and cover the plant well. They have a fuzzy underside. From mid-May to early June, its abundant flowering engulfs the bush: clustered in corymbs, its slightly frilled lilac flowers are adorned with a coppery throat. Touches of purple-pink embellish the flowers here and there.

It is high time for Rhododendrons to break free from acidic soil: this is now possible with the new Inkarho varieties! Moreover, with this Scented Hedge series, they are fragrant and vigorous in growth, in addition to having a particularly abundant and nectar-rich flowering. Rhododendron Lilac Scented Hedge is relatively tolerant in terms of exposure; we recommend planting it in non-scorching sun or partial shade, ideally to the east where it will benefit from the morning sun while being protected from excessive heat. In the garden, as a hedge or in a border, its abundant and bright flowering will easily brighten a shaded space. Much more tolerant than usual rhododendrons, it pairs, in a more classic way, with many other flowering bushes, not necessarily in acidic soil: hydrangeas, mock oranges, Japanese quince trees, butterfly bushes, abelias, or autumn camellias. Japanese anemones will also be good companions, as well as lungworts and foxgloves in the understory.

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Plant habit

Height at maturity 1.50 m
Spread at maturity 2 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour mauve
Flowering time May to June
Inflorescence Corymb
Flower size 6 cm
Fragrance Fragrant
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Botanical data

Genus

Rhododendron

Cultivar

INKARHO® Lila Dufthecke

Family

Ericaceae

Other common names

Rhododendron, Azalea

Origin

Cultivar or hybrid

Product reference19146

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Planting and care

Plant Rhododendron Lila Dufthecke Inkarho in a semi-shaded location, protected from cold, drying winds, in moist, loose, fertile soil. It will prefer slightly calcareous (pH 7.5 tolerated), neutral or acidic (pH 4.5 to 6.5) soil, suitable for a hydrangea. Dig a hole three times larger than the pot volume. 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 Rhododendron Inkarho are demanding plants. Water generously and keep the soil consistently moist. Azaleas and Rhododendrons have a relatively shallow root system. Therefore, they are sensitive to long periods of drought. Hence, enriching the soil with humus and providing abundant watering during dry periods are recommended. Apply a layer of wood chips or mulch around the bush every spring to retain soil moisture while maintaining a slightly acidic pH. Maintenance involves removing faded flowers after blooming and pruning dead branches.

Azaleas and Rhododendrons may sometimes be attacked by vine weevils that eat the leaf edges and rootlets, as well as the notorious "rhododendron borer," which usually doesn't cause severe damage. Effective natural solutions exist against vine weevils. Yellowing of the leaves (chlorosis) in Rhododendron indicates poor iron assimilation in the soil, leading to premature plant death. While limestone is often the culprit, poorly drained soil or deeply planted root ball can also explain the phenomenon.

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Planting period

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

Intended location

Suitable for Meadow, Woodland edge, Undergrowth
Type of use Border, Hedge
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral, Any
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Fertile, loamy

Care

Pruning instructions If necessary, prune immediately after flowering. Pruning too late will remove the buds and compromise the flowering of the following year. Please note that this Rhododendron responds well to pruning.
Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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