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Iris germanica Black Dragon - Bearded Iris

Iris germanica Black Dragon
German Iris, Bearded Iris

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A variety of garden iris with very dark flowers, silky and velvety in texture, a nearly black violet on the trailing sepals, but a slightly more purplish violet on the upright petals. In the centre of the flower, the beards are bronze with a blue tip. 'Black Dragon' blooms on 80cm (32in) stems, in the middle of the iris season, in spring.
Flower size
10 cm
Height at maturity
80 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil moisture
Dry soil, Moist soil
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Best planting time August to September
Recommended planting time February to March, July to October
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Flowering time May
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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.

Flowering

Flower colour violet
Flowering time May
Inflorescence Cluster
Flower size 10 cm
Flowering description Very dark purple to black.

Foliage

Foliage persistence Deciduous
Foliage colour medium green
Foliage description Deciduous.

Plant habit

Height at maturity 80 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Iris

Species

germanica

Cultivar

Black Dragon

Family

Iridaceae

Other common names

German Iris, Bearded Iris

Origin

Cultivar or hybrid

Product reference177571

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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.

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Planting period

Best planting time August to September
Recommended planting time February to March, July to October

Intended location

Suitable for Meadow, Rockery
Type of use Border, Slope
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, Well-drained soil

Care

Pruning instructions Cut the flowering stems at the end of the flowering period. If desired, trim the foliage at a 45-degree (113°F) angle halfway through the summer using pruning shears.
Pruning Pruning recommended once a year
Pruning time July to August
Disease resistance Good
Overwinter Can be left in the ground

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