Azalea Mount Rainier
Azalea Mount Rainier
Azalea Mount Rainier
Azalea Mount Rainier
Azalea Mount Rainier
Rhododendron (Azalea) Mount Rainier
Chinese Azalea
Received on 17th March, the azalea mollis in excellent condition.
Jean L., 09/03/2018
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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
Plant habit
Flowering
Foliage
Botanical data
Rhododendron (Azalea)
Mount Rainier
Ericaceae
Chinese Azalea
Cultivar or hybrid
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
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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