Helianthemum Ben Alder - Rock Rose
Helianthemum Ben Alder - Rock Rose
Helianthemum apenninum x mummularium Ben Alder
Rock Rose
Difficult recovery, 4 plants are dead and only 1 plant has 3 flowers! I do not recommend. They arrived in poor condition.
Nathalie , 15/05/2024
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Description
Helianthemum 'Ben Alder' is a variety of rockrose with abundant flowering in flamboyant tones and a very dense habit. Its small cup-shaped flowers, undulate and orange and marked with a large halo that turns redder at the throat, bloom for almost 5 months on small bright green foliage. This evergreen subshrub, hardy in well-drained soil, forms a beautiful persistent ground cover for very sunny areas of the garden, such as rockeries or the top of a wall. It is a good plant for a dry or mineral garden.
Belonging to the family of Cistaceae, Helianthemum 'Ben Alder' is one of the horticultural hybrids of the 'Ben' series, resulting from the cross-breeding of Helianthemum apenninum, native to southern Europe, and H. mummularium, widespread in Europe and Turkey. It was created in Scotland. Like its ancestors, 'Ben Alder' loves limestone, rocky, sandy soils and the sun. It forms a low, spreading and dense undershrub in a cushion 15 cm (6 in) high and 30 to 40 cm (12 to 16 in) wide. Its evergreen foliage is composed of very small linear leaves, fairly light green and slightly shiny, which highlights its abundant and bright orange and red flowering. From May-June to August-September, it is covered with a multitude of small flowers, 2.5 cm (1 in) in diameter, flat cups with five petals, slightly crumpled, adorned with a cluster of golden to orange stamens.
Helianthemum means "flower of the sun" in Greek, an appropriate name for these flowers that only open in bright sunlight. The delicate little blooms do not last long, but constantly renew themselves, sometimes until autumn if the weather permits.
The rockrose is the ideal plant to enhance a rocky garden or sunny slope, to cascade over a wall, or brighten up paving. It thrives in pots or containers for terraces. It can also be considered for the creation of green walls and green roofs. Combine it with other rock plants (Erigeron, Gypsophila, Mount Olympus St. John's Wort), but also with perennial plants such as lavender, drought-tolerant iris, sedums, or perennial geranium macrorrhizum. Its flowers blend delicately with the grey foliage of stachys, dwarf artemisias, or ballota.
Helianthemum Ben Alder - Rock Rose in pictures
Flowering
Foliage
Plant habit
Botanical data
Helianthemum
apenninum x mummularium
Ben Alder
Cistaceae
Rock Rose
Cultivar or hybrid
Planting and care
Easy to grow and low maintenance, 'Ben Alder' Helianthemum enjoys being planted in full sun, in a neutral or limestone soil that is perfectly drained, occasionally dry, and rich in gravel or sand. Not tolerating stagnant moisture in winter it will be necessary, especially in cold and wet climates, to lighten the soil during planting by adding gravel and sand to improve drainage. Helianthemum is a hardy plant that can withstand temperatures between -10 and -20 °C depending on the variety. It tolerates drought quite well and only requires regular watering (without excess) during the first year after planting; afterwards, the plant can manage on its own. At the end of flowering, pinch off the faded stems and foliage to encourage autumn regrowth. Lightly pruning the clump with hedge shears can be done after flowering to maintain a dense vegetation and prevent the centre from becoming bare. When young, make sure to protect it from any weeds that might deprive it of moisture or block out the sunlight essential for its health.
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.