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Rhododendron INKARHO Marcel Ménard

Rhododendron INKARHO® Marcel Ménard
Rhododendron

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The bush arrived in good condition, but a bit unbalanced with a long branch. It has flowered. Its flowers are wonders.

Mumu54, 11/11/2023

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This plant carries a 24 months recovery warranty

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Chelsea Flower Show Value-for-money
A variety of Rhododendron from the Inkharo range and therefore more tolerant of clay and limestone. 'Marcel Ménard' is an old variety, exceptional for the dark violet colour of its large flowers, speckled with brown in the centre. This compact bush has a nice rounded habit and is adorned with particularly dark green, evergreen foliage. A fantastic sight in April-May! Adopt it without hesitation in any loose soil, without excessive limestone though.
Height at maturity
1 m
Spread at maturity
1.20 m
Exposure
Partial shade, Shade
Hardiness
Hardy down to -23°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 April to May
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Description

Rhododendron Inkharo Marcel Ménard, just like the other varieties in the Inkharo range, is grafted onto an amazing Rhododendron that tolerates clayey and slightly chalky soils much better. This old French variety dating back to 1924 remains exceptional due to its dark purple colour and its large round inflorescences, each flower delicately marked with ochre and dotted with brown. The compact bush has a lovely rounded habit and is adorned with particularly dark green foliage, which is attractive all year round. It will flower in April-May, creating a dazzling display in partially shaded borders. Fully hardy, it tolerates sun fairly well as long as the soil remains consistently moist. 

 

Rhododendrons encompass over 800 species in the heather family, grown for their massive and beautiful blooms. The history of the Inkharo Rhododendrons, plants that are a bit revolutionary and were 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 led to the grafting of different varieties onto its extraordinary root system. The bushes obtained through 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, a soil that is suitable for hydrangeas.

The variety 'Marcel Ménard', obtained by hybridizers Croux et Fils in 1924, is one of the darkest cultivars, both in terms of flowers and foliage.

The bush is wider than it is tall, reaching approximately 1m (3ft) in height and 1.2m (4ft) in width at maturity. Under particularly favourable conditions, the bush can grow up to 1.5m (5ft) in height. The branches are abundantly covered with narrow evergreen foliage that is very dark and glossy. It is a slow-growing, but vigorous and hardy plant. In April-May, its spectacular flowering consists of corymbs of 15 beautiful large flowers! The buds, a dark purple, open into flowers of a warm violet reminiscent of petunias, beautifully adorned with orange-ochre areas called 'imperial' and dotted with brown at the base of the petals. The flower's throat also features beautiful white stamens.

 

It is high time for Rhododendrons to break free from the constraints of soil conditions: this is now possible with the new Inkharo varieties, which are no more difficult to cultivate than hydrangeas! The Rhododendron Inkharo Pierre Ménard will thrive in partial shade in a moist, fertile, loose soil without excess chalk. Reasonably hardy, it will reach its full potential in a humid and cool climate. It can be used as a stand-alone specimen or in mass plantings, especially with other acid-loving plants or simply with other flowering shrubs, the choice is vast! It can be paired with lilacs, with its violet flowers complementing their white, pink, purple, mauve, or violet clusters, stellata magnolias, and of course hydrangeas and camellias... It can also be planted in a beautiful pot on the terrace, taking care to regularly provide it with fertilizer and water (not too chalky) for watering.

Rhododendron INKARHO Marcel Ménard in pictures

Rhododendron INKARHO Marcel Ménard (Flowering) Flowering
Rhododendron INKARHO Marcel Ménard (Foliage) Foliage

Plant habit

Height at maturity 1 m
Spread at maturity 1.20 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour violet
Flowering time April to May
Inflorescence Corymb
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Botanical data

Genus

Rhododendron

Cultivar

INKARHO® Marcel Ménard

Family

Ericaceae

Other common names

Rhododendron

Origin

Cultivar or hybrid

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Planting and care

Plant the Rhododendron Hinkaro Marcel Ménard in a shady or semi-shady location, protected from cold and drying winds, in a moist, loose, fertile soil. It should be slightly alkaline, neutral or acidic, just like soil that suits a hydrangea. Dig a hole three times larger than the pot. Soak the root ball in water and plant the bush at the level of the collar, in a nourishing mixture composed of leaf compost, gravel or pumice, and loam or topsoil, as Inkarho Rhododendrons are hungry plants. Water generously and keep the soil moist in summer.

Azaleas and Rhododendrons have a relatively shallow root system. As a result, they are sensitive to long periods of drought. That's why soil enriched with humus and abundant watering during dry periods is recommended. Apply a layer of wood chips or mulch around the base of the bush every spring to keep the soil cool while maintaining a slightly acidic pH.

Maintenance consists of removing faded flowers after flowering and pruning out any dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of the leaves and rootlets, as well as by the infamous "rhododendron caterpillar," which does not usually cause significant damage. There are effective natural solutions against weevils. Yellowing of the leaves (chlorosis) in Rhododendrons indicates poor assimilation of iron from the soil and leads to the 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 Shaded rockery, Woodland edge, Undergrowth
Type of use Border, Free-standing, Container
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Partial shade, Shade
Soil pH Neutral, Any
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Fertile, loose

Care

Pruning instructions If pruning is necessary, it should be done immediately after flowering. Pruning too late and removing the buds will compromise flowering for the following year.
Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
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