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Azalée hybride - Azaleodendron (x) Gowenianum
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Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 24 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Rhododendron x gowenianum, still very rare in cultivation, is an ancient hybrid variety between an azalea and a rhododendron. This plant charms with its delicate and original flowering, made up of a multitude of small mauve to pink star-shaped flowers that perfume a whole section of the garden. In late spring, it is a real pleasure to see them bloom in large numbers on its beautiful rhododendron leaves. With its lovely rounded habit and modest stature, this bush thrives in partial shade and acidic soil, making it perfectly suited for small spaces and container gardening.
Rhododendron x gowenianum is a result of cross-breeding between an evergreen Rhododendron and a deciduous azalea, carried out in the United Kingdom before 1825 by James Robert Gowen. Its parents are the Rhododendron periclymenoides or viscosum and the hybrid R. catawbiense x ponticum. It is a hardy evergreen shrub (up to -15°C), which performs well in our cool and humid temperate climates.
This Rhododendron forms a well-branched bush with a dense and globose habit, which measures about 1m (3ft 4in) in all directions at the age of 10 years. In optimal growing conditions, it can reach 1.50m (4ft 11in) in height. Its growth is slow. Its flowering, full of charm, takes place in early June, depending on the climate. The flowers, 2.5 to 3.5cm (1 to 1.4in) wide, gradually change from light mauve to lilac and soft pink. They have a funnel shape and are gathered in spherical terminal clusters, each of which can have 36 to 48 flowers. Their scent is intensely sweet. The foliage, more or less evergreen in winter, is composed of large, simple, elliptical leaves with entire margins, arranged alternately on the branches. Their colour is a fairly dark green with a slight shine. Some leaves fall in winter, some dry up in spring, while new shoots develop. Rhododendrons have a shallow root system, which should never lack moisture, but they fear stagnant humidity that suffocates them.
Rhodoodendrons thrive in cool and humid climates, with marked winters, planted in humus-rich and acidic soil, such as heather soil. Under these conditions, they are beautiful evergreen shrubs for borders or flowering pots, attractive all year round. They happily accompany heathers, Japanese maples, or their Chinese relatives, the changing colours of which vary with the seasons, as well as Japanese camellias and their graceful autumn-flowering cousins, the often fragrant hybrids of C. sasanqua. The gowenianum hybrid, which forms a beautiful rounded bush, allows for playing with heights and filling in the spaces left between large heather shrubs. It will work wonders in large borders, but also on the terrace or balcony, in a carefully chosen large pot.
Rhododendron x gowenianum - Gowen's Azalea in pictures
Plant habit
Flowering
Foliage
Botanical data
Rhododendron x gowenianum prefers a rather shady location, unlike the Chinese Azalea, but its favourite exposure is partial shade. It is a plant that thrives in a humid and cool climate, and does not tolerate heat, dry air, or excessively dry or waterlogged soils. Plant it in a soil enriched with compost or humus, well-drained, and above all, non-calcareous. When planting, make sure not to bury the root ball too deeply, it should be level with the ground. Water generously during dry periods, at least once a week during the first year, with non-calcareous water.
In spring, apply fertilizer for plants that prefer acidic soil. After flowering, perform light pruning to maintain a neat plant, even though pruning is not essential. Remove faded flowers to promote the emergence of new shoots. Azalea have few diseases when well-established outdoors and in suitable climate conditions. It can be attacked by leaf-eating caterpillars and by the famous "rhododendron leafhopper," which rarely causes significant damage. If this is the case, treat with carbofuran. If the soil is calcareous or poorly drained, and if the plant is planted too deeply, the leaves may turn yellow and eventually wither.
Planting period
Intended location
Care
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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).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
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.