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Azalea Mount Rainier

Rhododendron (Azalea) Mount Rainier
Chinese Azalea

5,0/5
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Received on 17th March, the azalea mollis in excellent condition.

Jean L., 09/03/2018

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This plant carries a 24 months recovery warranty

More information

Value-for-money
Deciduous ericaceous shrub, notable for its fragrant cream and gold flowers, soft and luminous, complemented by medium green foliage.
Flower size
7 cm
Height at maturity
1.50 m
Spread at maturity
1 m
Exposure
Sun, Partial 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 December
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Flowering time April to May
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Description

The Chinese Azalea 'Mount Rainier' is a deciduous ericaceous shrub, remarkable for its fragrant cream and gold flowers, and soft, bright, medium green foliage.

 

 

A remarkable American variety, the deciduous Azalea 'Mount Rainier' has an upright habit and reaches a height of 1.50 m (4 ft 11 in) with a spread of 1 m (39.37 in) at maturity. The deciduous leaves are oval and flexible. In autumn, the foliage takes on vibrant colours before falling for winter. It flowers abundantly in terminal clusters in April-May. The large flowers have a wide-open trumpet shape. They are creamy-white with a wide golden centre and exude a subtle fragrance.

 

Hardy down to -20°C (-4°F), the Chinese Azalea 'Mount Rainier' thrives in a partially shaded position. This ericaceous shrub likes moist, humus-rich and well-drained, acidic soils. Plant deciduous Azaleas in ericaceous beds, on slopes, rockeries or at the edge of flowerbeds, to enjoy their fragrant, bright flowers, combined with Pieris, Heather, Kalmia, Japanese Pieris and Japanese maples.

 

Divided into 2 horticultural groups, the genus Rhododendron includes on one hand the Azaleas, Chinese and Japanese, with small evergreen or deciduous leaves, with 5 stamens per flower, and on the other hand the Rhododendrons, with abundant, evergreen and glossy foliage, whose flowers have more than 10 stamens. Although highly debatable from a botanical point of view, this classification is still widely used by horticulture professionals.

Azalea Mount Rainier in pictures

Azalea Mount Rainier (Flowering) Flowering
Azalea Mount Rainier (Foliage) Foliage

Plant habit

Height at maturity 1.50 m
Spread at maturity 1 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour two-tone
Flowering time April to May
Inflorescence Cyme
Flower size 7 cm
Fragrance slightly scented
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour green

Botanical data

Genus

Rhododendron (Azalea)

Cultivar

Mount Rainier

Family

Ericaceae

Other common names

Chinese Azalea

Origin

Cultivar or hybrid

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Planting and care

Plant the Chinese Azalea 'Mount Rainier' in moderate sun or semi-shade, protected from cold, drying winds, in a light, moist, humus-rich, acidic soil. Like all plants of the Ericaceous family, it does not tolerate chalky soils, or heavy soils, waterlogged in winter. Dig a hole three times larger than the pot. Soak the root ball in lime-free water and plant it level with the surface of the soil, in a mixture of 1/4 coir, leaf mould, horticultural grit or perlite, and loam. Water abundantly and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system. Therefore, they fear long periods of drought which is why a humus-rich soil and generous watering during dry periods are recommended. In addition, the root system is not very strong, so it is essential to lighten heavy soils with free-draining materials (horticultural grit, perlite, clay pellets) at planting. Apply 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 clearing out dead branches. The yellowing of leaves (chlorosis) in Azaleas and Rhododendrons indicates poor iron uptake from the soil and causes premature death of the plant. While lime 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 December

Intended location

Suitable for Meadow, Woodland edge, Undergrowth
Type of use Border, Edge of border, Container
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Well-drained and humus-rich

Care

Pruning instructions Pruning is optional. After flowering, remove dead wood and if you need to limit the branches, do so sparingly, as severe pruning could compromise thefollowing year's flowering.
Pruning Pruning recommended once a year
Pruning time July to August
Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
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