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Azalea japonica ENCORE Sunburst Roblet

Rhododendron (Azalea) japonica ENCORE® Sunburst 'Roblet'
Japanese Azalea

5,0/5
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Plant received in good condition, lovely recovery, looking forward to the flowering next year.

laurence, 15/10/2024

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This plant carries a 24 months recovery warranty

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Value-for-money
A delightful Azalea with almost tricoloured flowers from the ENCORE series, which brings together varieties capable of blooming at least twice a year: first from March to June, then again in September-October. They can even bloom a third time from July to August if the climate is correct. Unlike traditional Japanese Azaleas, these hybrids can also be grown in the sun. 'Sunburst' forms a wide bush, about 90 cm (35.4 in) tall by 1 m (3 ft 4 in) in spread, very decorative with its small evergreen foliage and its single, or sometimes semi-double, flowers in salmon pink with a white border and a deep pink throat. Grow in lime-free, rich, moist but well-draining soil. Hardiness: -12/-15°C (10.4 - 5 °F).
Flower size
6 cm
Height at maturity
90 cm
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 'Sunburst' Hybrid Azalea is a magnificent evergreen Azalea from Japan that grows into a wide bush and is adorned with almost tricolored flowers, salmon-pink edged with white around an almost red throat. 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, from March-April to OctoberThriving in sun or partial shade and relatively hardy, the Encore hybrid Azaleas are very versatile and come in a variety of styles, with single or double flowers, more or less compact and in a range of colours including white, red, various shades of pink, salmon, and orange vermillion. Mix them together to create either rustic flower beds or more sophisticated displays. Like all Azaleas, 'Sunburst' prefers non-calcareous soils, moist but well-draining, and fertile enough to sustain its multiple 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.

 

'Sunburst' is a medium-sized variety, with a slightly spreading bushy habit. The bush reaches about 90 cm (35.4 in) in height and 1 m (3 ft 4 in) in spread, rather slow-growing, though a bit faster than that of classic Japanese AzaleasIts particularly abundant first flowering, begins in March-April consisting of slightly frilled, single or occasionally semi-double flowers, soft salmon-pink and randomly edged with white, with a large pink-red blotch at the centre. They measure about 5-6 cm (2-2.4 in) in diameter, are funnel-shape, and arranged in small terminal clusters. A second wave of flowers begins in late May, when new shoots appear, already bearing new flower buds to 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. 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 and acid soil, such as ericaceous soil. In these conditions, they are very beautiful evergreen shrubs for flower beds or pots, attractive all year round. They harmonise beautifully with heathers, Japanese maples, or their relatives, Chinese Azaleas, which change their colours with the seasons. Combine them with flowering Japanese quince, Japanese camellias, and their graceful, often fragrant, autumn-flowering cousins, the Camellia sasanqua hybrids. This 'Sunburst' variety will look wonderful in a large, cool, moist rockery or flowerbed with Chinese Azaleas or panicle hydrangeas in a small Japanese or romantic-style garden.  It will also make a beautiful suject in a large container to adorn a terrace or balcony, planted in suitable soil and watered with lime-free water.

Azalea japonica ENCORE Sunburst Roblet in pictures

Azalea japonica ENCORE Sunburst Roblet (Flowering) Flowering
Azalea japonica ENCORE Sunburst Roblet (Foliage) Foliage

Plant habit

Height at maturity 90 cm
Spread at maturity 1 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour two-tone
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® Sunburst 'Roblet'

Family

Ericaceae

Other common names

Japanese Azalea

Origin

Cultivar or hybrid

Product reference887781

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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, alkaline-free soil. When planting, make sure not to bury the root ball too deep, it should be level with the surface of the soil. Water abundantly with lime-free water during dry periods, at least once a week in the first year. In spring, apply 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 major damage. If the soil is chalky or poorly drained, and if the root ball is planted 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 the first flowering, remove dead wood and if you need to limit the branches, do so sparingly, as severe pruning could compromise future flowerings.
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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