Kerria japonica
Kerria japonica
Kerria japonica
Kerria japonica
Kerria japonica
Kerria japonica
Kerria japonica
Japanese Kerria, Japanese Rose, Kerria
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This plant carries a 24 months recovery warranty
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Description
The Kerria Japonica, known as the Japanese Rose, is an attractive deciduous bush for its excellent robustness and radiant yellow flowering in spring. Its bushy silhouette, abundant vegetation, and moderate growth allow for numerous uses in the garden, including as a free hedge, even in slightly shaded and relatively dry areas in summer.
Kerria japonica is a bush of the Rosaceae family native to mountainous regions of China, South Korea, and Japan. In nature, this species forms dense and bushy masses that spread through slightly suckering stumps. It thrives in a partially shaded environment under the cover of other vegetation, sheltered from the scorching sun. It is a vigorous bush with an upright habit, composed of arched and slender stems, slightly wider than tall, reaching an average height of 2m. It thrives in well-drained, moderately fertile soil, even somewhat chalky. Due to its tendency to become messy, significant pruning is often necessary to maintain its beautiful appearance. Flowering occurs in April-May, earlier or later, depending on the climate. The flowers are solitary or grouped, cup-shaped with a 3 to 5 cm diameter, and have five yellow petals resembling wild roses. Occasionally, a sparse second flowering occurs in October. The vibrant green leaves are alternate and dentate, and the stems that bear them remain green throughout the year, even in winter. The plant produces fruit in the form of achenes, which have no ornamental interest.
Japanese Rose is particularly suitable for slightly shaded areas in the garden, as its flowers tend to fade in full sun. It can be used in shrub borders and as a free hedge. This bush also forms a beautiful espalier along medium-height walls with winter jasmine. In a hedge or border, it can be paired with red, orange, or white Japanese quinces, 'Gold Rausch' Forsythia, Neillia affinis, or the ornamental blackberry 'Olympic Double'.
Kerria japonica in pictures
Plant habit
Flowering
Foliage
Planting and care
The Kerria Japonica can be planted from November to February-March, frost-free, in partial shade or non-scorching sun, in a regular, well-drained soil. Dig a hole 50 cm wide and deep and plant it in a mixture of garden soil and compost. Then, cover the base with the mixture and lightly tamp down the soil. Water. You will water regularly for a few months to promote growth, especially in drought. Once well-rooted, the plant will thrive on its own in most regions. Beware of gastropod attacks in spring, as they are fond of young shoots.
The Kerria Japonica is hardy and easy to care for. After flowering, it is important to thin out the branches to avoid a too-dense appearance. Prune after flowering and remove old wood to promote flowering the following year so that the bush only flowers at the ends of the stems and not in the centre.
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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