Forsythia koreana Flying Machine - Korean goldenbell tree
Forsythia koreana Flying Machine - Korean goldenbell tree
Forsythia koreana Flying Machine - Korean goldenbell tree
Forsythia koreana Flying Machine - Korean goldenbell tree
Forsythia koreana Flying Machine - Korean goldenbell tree
Forsythia koreana Flying Machine® (‘Sunny’ Flying Machine®)
Forsythia, Gaenari, Korean goldenbell tree
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Description
The 'Kumsun' Korean Forsythia or Forsythia koreana in latin, is a small deciduous shrub which is quite unique. Its superb foliage has a granite-like appearance, but in reality it is finely veined with cream-white on a green background. It has a bushy and relaxed habit which is slightly spreading with thin stems. This distinguishes it from other Forsythias, which can sometimes be a bit stiff. Its spring flowers, with small golden yellow bells scattered along the bare branches, clearly demonstrates its relation with other Forsythias, our spring stars. This is an original variety to discover which is as hardy as the others and can be showcased as a specimen, in the center of a border, or even in a very large pot on the terrace.
The 'Kumsun' Korean Forsythia belongs to the olive family. This variety comes from the Korean Forsythia, which was once considered a subspecies of F. viridissima, native to China, but is now classified as a separate species. 'Kumsun' is different from other Forsythias due to its graceful, bushy and slightly spreading habit. It keeps its spread within 1.2 metres (3 feet 11 inches) in all directions. Its slender and flexible branches are reddish-brown. Like the others, it provides a true spring spectacle from March to May, literally covered with numerous small bell-shaped flowers in bright yellow. The flowers are followed by the emergence of deciduous foliage, and what foliage it is! The 'Kumsun' Korean Forsythia is one of the few in its species to have tender green foliage with numerous veins colored cream and yellow, creating a very bright variegated pattern.
The 'Kumsun' Forsythia is hardy and very easy to maintain. It grows in all types of soil as long as the soil does not retain too much winter moisture. It can be cultivated in pots due to its small size, as a specimen or in groups in borders, particularly with Pink Abeliophyllum, Abelia grandiflora, Smoke Bush or with Mahonia or Mock Orange. It can also be used as a flowering hedge as its branching is quite low and it tolerates pruning well. You can also train it against a wall. Its branches can be cut in early December and placed in a vase, they will flower for Christmas.
Forsythia koreana Flying Machine - Korean goldenbell tree in pictures
Plant habit
Flowering
Foliage
Botanical data
Forsythia
koreana
Flying Machine® (‘Sunny’ Flying Machine®)
Oleaceae
Forsythia, Gaenari, Korean goldenbell tree
Forsythia viridissima var. koreana Flying Machine or ‘Sunny’ Flying Machine
Cultivar or hybrid
Planting and care
The Korean Forsythia 'Kumsun' appreciates a sunny exposure as well as partial shade. Place it in any ordinary soil, preferably moist, avoiding overly chalky and arid soils.
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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