Hibiscus syriacus Shintaeyang - Rose of Sharon
Hibiscus syriacus Shintaeyang - Rose of Sharon
Hibiscus syriacus Shintaeyang - Rose of Sharon
Hibiscus syriacus Shintaeyang
Common Hibiscus, Rose of Sharon, Syrian ketmia, St Joseph's rod, Garden Hibiscus
Hello, I planted this young plant in autumn. I am in Brittany. This winter, we had two episodes of frost down to -4. During the first episode, I did not protect the spike of the plant and during the second episode, I had put hay and cut herb around the spike. Today, on 18th March, I notice small green shoots growing on the stems!!!!!!!!!!!!!!
Fanny, 18/03/2023
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Description
Hibiscus syriacus 'Shintaeyang', also known as Tree Mallow or Althaea, has a charm with tropical accents. Its single, bicoloured flower displays pure white petals, with a cherry-red splashed base that extends into short filaments. Enchanting, this deciduous shrub produces large flowers throughout the summer, similar to hollyhocks, that are short-lived but constantly renewed. A bit stiff in its youth, this variety becomes more bushy over time and forms a fabulous, very floriferous shrub. Whether in a flowering hedge, flower bed, or large container near the house, it is easy to grow in the sun and adapts to any well-drained, ordinary or even slightly chalky soil.
Hibiscus syriacus, sometimes called Rose Mallow, is a hardy shrub, deciduous in colder climates but evergreen in warm climates, belonging to the Malvaceae family, just like hollyhocks and marsh mallows. It is native to temperate regions of Asia and has given rise to numerous cultivars, including the 'Shintaeyang' variety, which stands out for its upright growth and abundant flowering from August to October. It is a shrub that reaches a height of 2 to 3 m (6 ft 7 in to 9 ft 10 in) and a spread of 1.5 to 2 m (4 ft 11 in to 6 ft 7 in), with an upright habit supported by an erect branching system and fairly slow growth. It produces large, single corollas in vibrant and contrasting white and red colours, surrounding a large central column of fused white stamens. Its foliage forms a beautiful dark background, of slightly glossy dark green. The leaves are alternate, lobed, and ovate to lanceolate, with dentate and undulate margins.
Rose Mallows have the advantage of flowering abundantly at a time when few shrubs are in bloom in the garden, in almost all soils and climates. 'Shintaeyang' Althaea thrives in bright, warm exposures. This hibiscus requires little maintenance and grows slowly but steadily. Plant it in a sheltered location away from strong winds, in a soil that remains slightly moist until the end of summer. This highly colourful but uncommon variety in our gardens can be used as a medium-sized hedge, in combination with other hibiscus varieties of different colours, or buddleias and abelias, as well as in isolation or at the back of a perennial flower bed composed of asters, phlox, daylilies, gauras, or shrubby mallows, for example.
Hibiscus syriacus Shintaeyang - Rose of Sharon in pictures
Plant habit
Flowering
Foliage
Botanical data
Hibiscus
syriacus
Shintaeyang
Malvaceae
Common Hibiscus, Rose of Sharon, Syrian ketmia, St Joseph's rod, Garden Hibiscus
Cultivar or hybrid
Planting and care
Plant Hibiscus syriacus in spring or autumn, in a sunny position and in a well-drained, loose, but fertile soil. Dig a nice deep planting hole, add some compost and sand to your garden soil to improve soil quality if necessary. Water thoroughly after planting. Don't worry if the vegetation doesn't start before May: it's completely normal for this shrub.
While althaeas tolerate heat and occasionally dry soils, they are more beautiful and more floriferous in a soil that retains moisture in summer. Mulch the base of these shrubs if needed.
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).
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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.