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Rhododendron Mosers Maroon

Rhododendron Moser's Maroon
Rhododendron

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Wow!!! I'm chuffed; even lovelier than I hoped, a lighter shade, with a darker pink centre, it's my first rhododendron!!! Received in great shape, I'm delighted! So much so, I've ordered another different one so they can make a lovely pair!!!

Christine, 08/05/2020

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This plant carries a 24 months recovery warranty

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Graden Merit
Large, shiny flowers of intense garnet red with black spots, perfect for brightening up the garden in spring. This excellent, old and floriferous variety forms a dense and compact shrub. Its evergreen foliage starts out as carmine-red to purple, then becomes a glossy dark green. Magnificent in an ericaceous bed or in a large container, in partial shade or even in full sun!
Height at maturity
2 m
Spread at maturity
1.50 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -20°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 May to June
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Description

The Rhododendron 'Moser's Maroon' is an absolutely stunning old hybrid. With its large, glossy flowers of intense garnet-red, with a black blotch and a cluster of whitish stamens, it is perfect for bringing the garden to life in spring. This foliage of this variety is particularly distinctive due to the carmine-red colour of its spring shoots, which later turn a lustrous dark green. Its evergreen foliage, with its changing colours extends the season of interest for this beautiful shrub. With its dense, upright habit, it will look great in an ericaceous bed or a large container, in partial shade or even in full sun!

 

Rhododendrons are plants of the Ericaceae family, just like heathers, preferring predominantly chalk-free and slightly acidic soils, as well as damp climates. 'Moser's Maroon' was introduced in the early 20th century. In 1932, it received the prestigious RHS Award of Garden Merit for its ornamental qualities and performance in the garden. It naturally forms a dense bush with a distinctly upright habit, reaching about 2m (6.56 ft) in height and 1.50m (4.92 ft) in spread. It is fairly slow growing. Its dark green, evergreen leaves, which change colour, have a slightly satin finish and are elliptical in shape, covering the plant well. They have a very downy underside. The young leaves are a beautiful carmine-red to purple. In May-June, its remarkably abundant flowering overwhelms the bush: beautiful and large bell-like flowers bloom in voluminous corymbs. Their intense garnet-red colour, mottled with dark purple, is enhanced by the glossy texture of the petals and the white tips of the stamens, like little jewels clustered at the heart of the flower.

 

The Rhododendron 'Moser's Maroon' is a lustrous shrub, hardy down to -15°C (5 °F) or even -20°C (-4 °F) and easy to grow as long as the conditions suit it in terms of soil and climate. Although they prefer partial shade, large-flowered hybrid Rhododendrons can tolerate the sun as long as it is not too intense and their base remains cool and moist. 'Moser's Maroon', with its prolific, dazzling flowers, will dress up any small partially-shaded area of the garden, terrace, or balcony. Plant it together with ferns, blue or variegated hostas, Pieris, heathers, Kalmias, Azaleas, and Japanese Maples, or other rhododendrons from the same group to create superb patchworks of textures and colours in spring. Growing it in a container requires regular watering with non-alkaline water and specific fertilizer for ericaceous plants.

 

Rhododendron Mosers Maroon in pictures

Rhododendron Mosers Maroon (Flowering) Flowering
Rhododendron Mosers Maroon (Foliage) Foliage

Plant habit

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

Flowering

Flower colour red
Flowering time May to June
Inflorescence Corymb
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Evergreen
Foliage colour dark green
Foliage description Elliptical leaves with pointed apex, with fluffy underside, of leathery texture, evergreen.

Botanical data

Genus

Rhododendron

Cultivar

Moser's Maroon

Family

Ericaceae

Other common names

Rhododendron

Origin

Cultivar or hybrid

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Planting and care

Plant the Rhododendron 'Moser's Maroon' in a semi-shaded position, protected from cold, drying winds, in a light, moist, acid to neutral, humus-rich soil. Like all ericaeous plants, it does not tolerate chalky or heavy soils waterlogged in winter. If the soil remains moist in summer, this Rhododendron will also tolerate some exposure to a moderate sun. Avoid planting at the foot of the Rhododendron, as its shallow roots do not respond well to competition from other plants, particularly for water.

Dig a hole three times larger than the pot. Soak the root ball in alkaline-free water and plant it so the base of the stem is at soil level, in a mixture composed of 1/4 peat, leaf mould, horticultural grit or perlite and loam. Water generously and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system. As a result, they are sensitive to long periods of drought. That is why a soil enriched with humus and generous watering during dry periods is recommended. In addition, this root system is not very strong, which is why it is essential to lighten heavy soils with free-draining materials (horticultural grit, perlite, clay pellets) when planting. Apply a mulch of shredded pine bark around the base of the shrub every spring to keep the soil moist while maintaining an acidic pH.

Maintenance consists of removing faded flowers in summer and clearing out 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 famous "Rhododendron lace bug", not usually causing significant damage. Yellowing of the leaves (chlorosis) in Rhododendrons indicates poor uptake of iron from the soil and causes premature plant death. While chalk 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 Meadow, Woodland edge
Type of use Border, Edge of border, Container
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Humus-rich or peaty, or even sandy, fertile and well-drained

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
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