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Collector's item

Rhododendron canescens - Mountain Azalea

Rhododendron (Azalea) canescens
Mountain Azalea

4,6/5
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Beautiful plant, tall with plenty of leaves. Well received at the time I had requested. Will be planted on Monday during the waning moon, which is auspicious for plantings. Thank you for the packaging. See you soon.

Marie-Rose, 10/10/2020

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This plant carries a 24 months recovery warranty

More information

Value-for-money
Botanical azalea native to the southeastern United States forms a bushy, dense and hardy shrub. Flowering in early spring, small and numerous flowers reminiscent of honeysuckle, pale pink, deliciously musky fragrance. Dark and deciduous foliage, beautiful colours in autumn. This bush of heathland soil withstands cold and heat, in partial shade or dappled sunlight.
Flower size
2 cm
Height at maturity
1.50 m
Spread at maturity
1 m
Exposure
Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March to April, September to October
Recommended planting time February to April, September to November
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Flowering time April to May
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Description

The Canescens Azalea, or Rhododendron canescens, is a botanical species native to the southeastern United States. It forms a dense and bushy  bush that is adorned with numerous small flowers resembling those of honeysuckle in early spring. They are pale pink and their fragrance is delightfully musky. The dark deciduous foliage develops at the end of flowering and takes on lovely autumn colours. This bush of heathland soil tolerates cold and heat, in partial shade or dappled sunlight.

 

 

The genus Rhododendron belongs to the family Ericaceae. The canescens species is found in nature growing in large colonies in damp woods, on the edges of marshes, and along streams in North Carolina, western Florida, Tennessee, Arkansas, and Texas.

It is a perfectly hardy bush with slow growth and a bushy habit that can reach 13m (42ft) in height in its natural environment, but does not exceed 1.50 to 2m (6 to 7ft) in heightunder our climate. In April-May, as the leaves begin to emerge, the flowers bloom in clusters of 5 to 9 in short racemes. They are pale pink (rarely white) and form a funnel-shaped corolla that is 3 to 4cm (1.6in) long. A very pleasant musky fragrance can be detected nearby. The pistil and stamens of each flower extend well beyond the corolla and gracefully arch upwards. The leaves are thick, elliptical, and measure 5 to 7cm (2.8in) in length. Dark green on the upper surface, they are grey and pubescent on the underside. The flowering gives way to woody capsules that are 1 to 1.5cm (0.6in) long and filled with seeds. The Canescens Azalea tends to form large colonies through spontaneous  sowing in its natural environment. Its root system is shallow and forms a  vascular bundle that is quite fragile.

 

Rhododendron canescens is used in heathland beds, in cool understorey, associated with other azaleas and rhododendrons, as well as Japanese maples, Pieris, and camellias, for example. The early and magnificent flowering of this bush are its main assets, so showcase it according to your desires in a Japanese-inspired atmosphere or in a pot on the terrace.

Rhododendron canescens - Mountain Azalea in pictures

Rhododendron canescens - Mountain Azalea (Flowering) Flowering
Rhododendron canescens - Mountain Azalea (Foliage) Foliage

Plant habit

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

Flowering

Flower colour pink
Flowering time April to May
Inflorescence Cyme
Flower size 2 cm
Fragrance Fragrant, musqué

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Rhododendron (Azalea)

Species

canescens

Family

Ericaceae

Other common names

Mountain Azalea

Origin

North America

Product reference782022

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Planting and care

Azaleas prefer acidic, humus-rich soils that retain moisture even in summer. However, it requires well-drained soil as stagnant moisture in winter can be fatal to its fragile root system, which needs aerated soil to function normally. This bush will thrive better in partial shade or dappled sunlight. Before planting this rhododendron in ordinary soil, it is necessary to acidify the soil with turf, an operation that may need to be repeated. Install it in a sheltered location away from strong winds, even though it is hardy down to -20°C. Poor drainage almost inevitably leads to root rot, so in heavy soil, it is preferable to elevate the planting. To do this, there is a technique commonly practiced in Anglo-Saxon countries: the operation consists of installing blocks of turf in a staggered pattern, one on top of the other, slightly inclined inward, as if they were bricks, creating a raised terrace. Moisten the blocks before planting the bushes in individual holes dug in the turf.

The shallow root system of this plant cannot tolerate any competition, so no planting should be done at its base. Install an acidifying mulch (wood chips, bark, or pine needles) around its base, which will help maintain soil moisture and temperature. The roots should never dry out: water abundantly during dry periods, at least once a week in the first year. This rhododendron slowly naturalizes through suckers, without being invasive.

It is best not to prune this type of bush, but if necessary to limit its size, prune it in April-May after the early spring flowering, during the growing season: remove up to a quarter of the length of the branches.

Planting period

Best planting time March to April, September to October
Recommended planting time February to April, September to November

Intended location

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

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
4,6/5
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