Iris germanica Black Dragon - Bearded Iris
Iris germanica Black Dragon - Bearded Iris
Iris germanica Black Dragon
German Iris, Bearded Iris
Ordered and delivered this spring. I had ordered a large pot to get a vigorous plant. The plant received was not true to the description or the photo on the website. The iris rootstock, priced at €9.90, was not ‘4–6 cm long’ as stated, but 3 cm. I planted it anyway, but it did not take. Promesse de Fleurs refunded me.
Adeline, 01/11/2025
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Description
Iris germanica 'Black Dragon' is a nearly black Grand Garden iris, a colour enhanced by the silky texture of the petals and the velvet of the sepals. In this variety, the flower has a classic, understated shape. The petals are a purplish violet that dominates the sepals, which have black reflections, and the whole is animated by bronze beards with blue tips. Its strong and branching floral stems create beautiful flowering tufts in spring. Ideal for accompanying pastel blooms in shades of blue, pink, or white.
The 'Black Dragon' Iris is a rhizomatous perennial that forms upright clumps. Its deciduous foliage disappears in autumn and reappears in spring. This plant belongs to the Iridaceae family. It is one of the many cultivars obtained over centuries, whose controversial origin is debated around the number of chromosomes of potential ancestors. It should be noted that Garden Irises have European origins.
The 'Black Dragon' Iris will reach approximately 80cm (32in) in height when in bloom. Each rhizome produces a branching stem that bears numerous black-coloured flower buds. The clump spreads very rapidly, with no theoretical limit over time, as the centre rhizomes become bare in favour of the outer rhizomes. The foliage consists of long sword-shaped leaves, glaucous green in colour, with strong veins. In April, floral stems appear, which will give flowers in May and June, in the middle of the season for tall irises, blooming from the top to the lower branches.
Obtained by Schreiner in 1982 - Award: Honorable Mention in 1968
To accompany irises, choose plants to associate with them based on their needs (exposure, soil...), their "respectful" vegetation towards irises (low plants or light foliage, non-competitive plants), and their decorative complementarity (appearance, flowering period). For example, Gauras will not cast much shade on the irises and will keep the iris bed attractive throughout the summer. California poppies and love-in-a-mist will tolerate the same dry soil as the iris in summer. Perennial geraniums, salvias, and Libertias also complement irises very well. Slopes, the base of small trees with light foliage, and terraced edges will be stabilized by a dense planting of old varieties that can remain in place and require little care. If the goal is more decorative and access for care is possible, one can choose more modern varieties, such as intermediates that are less likely than tall varieties to be literally flattened by wind and rain.
The vegetable garden can be adorned with a few clumps or borders of irises, as it is also the place dedicated to growing cut flowers.
Iris germanica Black Dragon - Bearded Iris in pictures
Flowering
Foliage
Plant habit
Botanical data
Iris
germanica
Black Dragon
Iridaceae
German Iris, Bearded Iris
Cultivar or hybrid
Planting and care
Do you have a very sunny, rather dry location in the summer?
This is the ideal location for planting irises! In the shade, they grow but do not flower. They are grown in all regions of France. Hardy, they do not need winter protection. Well-drained soil is perfect, even if it is rather dry and chalky, or even rocky. Soil that is too wet promotes rootstock rot. Plant from July to September. This allows the rootstocks to grow sufficiently before being dug up, and to develop new roots before winter. They should be planted as soon as they are purchased for best results. Plan to divide irises approximately every 4 years to give them fresh soil. They have vigorous growth and require space to develop and flower well. They are planted with spacing appropriate to the size and vigour of the variety: approximately 34-50cm (13-20in) for tall irises (5 to 10 plants per square metre). Always consider the direction of rhizome growth by arranging them in a star shape, with buds and leaves facing outward, and spacing them well from other varieties so they have room to grow.
Planting
Dig a hole wide and deep enough. Make a conical mound of soil on which to place the rootstock and spread out the roots. Cover the roots. It is important that the rootstock is level with the surface of the soil. It should not be planted in a depression (risk of rot). Take into account that the soil will settle and the iris will sink. In clay or damp soil, the rootstock will even be left raised on a slight mound of a few centimetres. To make the soil adhere to the roots, lightly compact the soil and water abundantly immediately after planting. Water 2-3 times if necessary until establishment.
Maintenance:
Keep the soil free of weeds by shallow hoeing, taking care not to damage the rootstocks or roots. Weeds shade the irises, retain moisture (rot), and attract slugs. Similarly, remove dry leaves. If they are diseased (reddish-bordered spots of heterosporiosis), we recommend burning them. Remove faded flowers.
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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