Helleborus Walbertons Rosemary
Helleborus Walbertons Rosemary
Helleborus Walbertons Rosemary
Helleborus Walbertons Rosemary
Helleborus Walbertons Rosemary
Helleborus niger x orientalis Walberton's Rosemary (Walhero)
Lenten Rose
I planted this hellebore in the Paris region in September 2022. By the end of December 2023, its buds are just emerging from the ground, so it will truly be in bloom around mid-January. On Instagram, I've seen blooming plants as early as mid-December. Conclusion: planted under normal conditions in open ground, I doubt that this hellebore can flower in November; it is therefore not particularly early. Apart from this caveat, it is a lovely variety.
Jérôme , 27/12/2023
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Description
The Hellebore or Helleborus Walberton's Rosemary (Walhero) is a wonderful plant born in England from the alliance between the Christmas rose, Helleborus niger, and the Lenten rose, Helleborus orientalis. Combining the qualities of its parents, this excellent novelty offers a fantastic flowering that lasts 5 months, from autumn to spring. Its flowers, well displayed, are stars that gradually change from pink veined with white to salmon tones before slowly turning green. This robust and very hardy perennial can be planted both in borders and under shrub beds, mixed borders, as well as in pots. Its flowers are very beautiful and precious in winter bouquets.
Helleborus Walberton's Rosemary is an evergreen herbaceous perennial plant, belonging to the family of ranunculaceae. Forming a clump 30cm (12in) tall and spreading over 50cm (20in) at minimum, this sterile variety, which does not produce seeds, stands out for the abundance and especially the duration of its continuous flowering, which starts in November and ends in April. Its abundant flowers proudly stand above beautiful glossy foliage, offering their yellow stamens to passers-by. They are composed of 5 petals with irregular edges, tapered to a point, arranged in an open cup. Born from dark pink buds, they bloom in light pink veined with white and speckled with dark pink, then gradually change colour and age beautifully. The foliage is composed of palmate basal leaves, slightly dentate, dark green and shiny. They are evergreen leaves 30 to 40cm (12 to 16in) long, composed of 7 to 9 leaflets. They actually only live for 8 months and are regularly replaced by new leaves. Hellebores do not like to be moved once established, the young shoots taking some time to flower. The seeds are sown by ants.
Use hellebores as elements of an ancient tapestry, mixing them with brightly coloured woodland plants. They are well highlighted when planted near Pieris, small-sized rhododendrons in acidic soil, and under conifers (especially in windy locations). Also mix them with primroses, bleeding hearts, lungworts, foxgloves, or spring-flowering bulbs: crocuses, daffodils, snowdrops... You can also accompany them with ferns and shade irises to create a beautiful contrast a little later in the season. They can also be planted in groups, like a bouquet, near the entrance of the house, in shaded areas, to enjoy their early flowers up close. They are suitable both as cut flowers and in borders, beds, or even containers... Over time, the flowers of the Hellebore do not fade like the majority of other flowers but dry up.
Helleborus Walbertons Rosemary in pictures
Flowering
Foliage
Plant habit
Botanical data
Helleborus
niger x orientalis
Walberton's Rosemary (Walhero)
Ranunculaceae
Lenten Rose
Cultivar or hybrid
Planting and care
The Hellebore grows in any deep, rich, light or clay soil, even on limestone subsoil, in partial or light shade, while being sheltered from cold and prevailing winds. This perennial can be planted from early autumn to spring, between February and April. It thrives in deeply cultivated soil mixed with organic matter. To fertilize, use bonemeal or another organic fertilizer. Water the plants well after planting and then add a layer of mulch 2 to 5cm (1 to 2in) thick. Regularly remove faded leaves to improve flowering. Ensure a planting distance of 30 to 40cm (12 to 16in) between each plant to promote their development. Hellebores do not tolerate stagnant water as it may cause them to rot.
The roots should not dry out completely in summer. Hellebores can be affected by a fungal disease transmitted by aphids, called black spot disease. Remove the old leaves of deciduous species or the stained leaves of evergreen species when the flower buds appear. Remove faded flowers after the seeds have fallen. They can also suffer from grey rot or die from collar rot. This often occurs due to poor growing conditions, in excessively wet situations.
On a balcony or terrace, plant them in pots 4 to 5 times larger than their size, as they need space to develop their root system. Very hardy, most Hellébores can withstand temperatures as low as -15°C without suffering, allowing them to adapt to a wide range of areas. Mostly native to the circum-Mediterranean regions, Hellebores are undemanding plants that can live for many years without requiring much care.
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.