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Azalea japonica ENCORE Sunset Roblen

Rhododendron (Azalea) japonica ENCORE® Sunset 'Roblen'
Japanese Azalea

4,4/5
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1 reviews
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Fast delivery, smaller young plant than shown in the picture, unfortunately out of the 3 pots delivered, 1 pot had an azalea with broken branches, despite intact packaging.

Paula, 18/04/2023

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This plant carries a 24 months recovery warranty

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A flamboyant Azalea in the Encore series, which brings together varieties capable of flowering at least twice a year: first from March to June, and then again in September-October. They can even bloom a third time from July to August if the climate is right. Unlike traditional Japanese Azaleas, these hybrids can also be grown in the sun. 'Sunset' forms a handsome bush about 1.20m (3.94 ft) in height by 1m (3.28 ft) in spread, very decorative with its small evergreen foliage and its single to semi-double rich orange vermillion flowers. Grow in lime-free, moist, rich but well-draining soil. Hardiness: -12/-15°C (10.4 / 5 °F).  
Flower size
6 cm
Height at maturity
1.20 m
Spread at maturity
1 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -12°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time March to May, September to October
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Flowering time April to May, July to August, October
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Description

The Encore 'Sunset' Hybrid Azalea is a perennial variety with beautiful single to semi-double flowers in sunset colours. It belongs to the Encore series, which has made the Japanese Azalea a plant almost as decorative as the rose with its successive and spectacular flowerings. This lovely evergreen bush blooms two to three times a year, depending on the climate, in successive waves from late winter or early spring to early autumn. Thriving in full sun or partial shade and relatively hardy, the Encore hybrid Azaleas are very versatile and come in a variety of styles, including single or double flowers, more or less compact, in a range of colours including white, red, various shades of pink, salmon, and orange vermillion. Mix them together to create rustic flowerbeds or more sophisticated displays. Like all Azaleas, 'Sunset' prefers non-calcareous soils, moist but well-draining, and fertile enough to sustain its successive flowerings.

 

From a botanical point of view, Azaleas are actually Rhododendrons, plants from the large Ericaceae family. The hybrids from the Encore series, distributed by Globe Planter, were created thanks to Buddy Lee, a talented American nurseryman specializing in these plants. These quite fantastic Azaleas are the result of a long process of hybridisation and selection, with the aim of obtaining varieties capable of flowering several times a year, as well as withstanding the sun.

'Sunset' is a beautiful tall variety, with a rather upright bushy habit and an informal appearance. The bush reaches about 1.20 m (3.94 ft) in height and 1 m (3.28 ft) in spread, and is rather slow-growing, though it is slightly faster than the classic Japanese Azaleas. Its particularly abundant first flowering starts in March-April and takes the form of single, or occasionally, semi-double flowers, which are orange with a hint of red, satiny in appearance and slightly wavy. They measure about 6 cm (2.4 in) in diameter, are funnel-shaped, and grouped in small terminal clusters. A second, slightly less generous wave of flowers, begins at the end of May when new shoots appear, carrying new flower buds that will open in summer. A final flowering occurs in early autumn, usually in October. The foliage of the Japanese Azalea, more or less evergreen depending on the severity of the winter, consists of small, simple, glossy, elliptical leaves with smooth edges, arranged alternately on the branches. They are rather light green in spring, darkening in summer, and often take on beautiful bronze or purple shades due to the cold. This variety is hardy down to -12/-15°C (10.4/5°F). Azaleas and Rhododendrons have a shallow root system that always needs to be kept moist, but they also dislike waterlogged soil which would suffocate the roots.

 

Japanese Azaleas thrive in cool climates with distinct winters, planted in humus-rich, acid soil, such as ericaceous soil. In these conditions, they are very beautiful evergreen shrubs for flower beds or containers, attractive all year round. They are a perfect accompaniment to heathers, Japanese maples, or their relatives, Chinese Azaleas, which change their colours with the seasons. Combine them with quinces and Japanese camellias, as well as their graceful, often fragrant, autumn-flowering cousins, the Camellia sasanqua hybrids. This 'Sunset' variety will look wonderful in a large, cool, moist rock garden or flower bed with Chinese Azaleas, blue perennial geraniums (Rozanne, Orion) or paniculate hydrangeas, in a small Japanese or romantic-style garden. It will also make a beautiful subject to adorn a terrace or balcony, planted in suitable soil and watered with alkaline-free water.

 

Azalea japonica ENCORE Sunset Roblen in pictures

Azalea japonica ENCORE Sunset Roblen (Flowering) Flowering
Azalea japonica ENCORE Sunset Roblen (Foliage) Foliage
Azalea japonica ENCORE Sunset Roblen (Plant habit) Plant habit

Plant habit

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

Flowering

Flower colour orange
Flowering time April to May, July to August, October
Inflorescence Cyme
Flower size 6 cm

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Botanical data

Genus

Rhododendron (Azalea)

Species

japonica

Cultivar

ENCORE® Sunset 'Roblen'

Family

Ericaceae

Other common names

Japanese Azalea

Origin

Cultivar or hybrid

Product reference887802

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Planting and care

The Encore hybrid Azalea does well in sun (not too intense), but its favourite position is in partial shade, especially in hot and very sunny regions. Plant it in a humus-rich and well-drained, non-alkaline soil. Make sure not to plant the root ball too deep, it should be level with the surface of the soil. Water copiously with alkaline-free water during dry periods, at least once a week in the first year. In spring, apply a fertilizer for ericaceous plants. Pruning is not essential but it is a good idea to prune lightly after flowering to keep the plant looking neat. Remove spent flowers to encourage new growth. The Azalea suffers from very few diseases when well established outdoors. It can be attacked by weevils that eat the edges of the leaves and rootlets, and by the famous "Rhododendron lace bug", not often causing significant damage. If the soil is chalky or poorly drained, or if the rootball is too deep, the leaves may turn yellow and eventually die. Japanese Azaleas do not tolerate the dry environments of our interiors at all.

Planting period

Best planting time March, October
Recommended planting time March to May, September to October

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Edge of border, Container
Hardiness Hardy down to -12°C (USDA zone 8a) 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, well-drained

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 next year's flowering.
Pruning Pruning recommended once a year
Pruning time May
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
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