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Iris germanica Dernier Cri

Iris germanica Dernier Cri
German Iris, Bearded Iris

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A very beautiful bicoloured variety in subtly matching shades. The broad sepals take on a lavender colour with a slight central gradient, highlighting the extremely tasteful mandarin orange beards. The vertically erect petals are a very pale beige, creating a delicate floral harmony. Carried on medium-sized stems, the flowers bloom in late Iris season, towards the end of May and the start of June.
Flower size
13 cm
Height at maturity
70 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -23°C
Soil moisture
Dry soil, Moist soil
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Best planting time August to September
Recommended planting time July to October
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Flowering time May to June
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Description

Iris germanica 'Dernier Cri' is a recent variety of Bearded Iris with an eminently romantic charm. Its large and stylish bicoloured flowers present a tasteful pastel harmony. The light tones of the petals, in shades of light beige, gracefully associate with the lavender tones of the sepals, with an occasional touch of orange brought by the beards. Of intermediate size, flowering late in the season, this beautiful Iris charms the beds for 3 weeks at the end of spring.

The 'Dernier Cri' Iris is a rhizomatous and deciduous perennial plant, which adopts a habit of vigorous upright clumps. It belongs to the Iridaceae family, like the Crocus, Gladiolus or Crocosmia. The species Iris germanica, or German Iris, is probably the result of hybridization between different botanical species. Belonging to the Bearded Iris group (due to the fine ridge present on the sepals), they are the most cultivated in gardens. These plants prefer neutral to limestone soils, are sun-loving, and their rhizomes need to capture the heat of the sun in summer to flower well. A minimum of 6 hours of sunlight per day is traditionally required.

'Denier Cri' is an intermediate-sized variety, reaching a height of 70 cm (28in) when in bloom. The floral stems will bear 3 to 5 or 6 flower buds in May, which will open at the end of the month and in June, depending on the region and weather conditions. The large flowers (12 cm (5in) in diameter and larger) display the customary airy grace of bearded Irises, which in some aspects are reminiscent of orchids. At maturity, the 3 sepals of a beautiful width spread almost horizontally, exhibiting their superb lavender colour. Their undulated edges give them a pleasant lightness and volume to the eye. Upright and even more ruffled, the smaller petals grow close to each other, thus concealing the style (female reproductive part). Their light colour, between beige and off-white, harmonises happily with the lavender of the sepals they overtop. At their junction, an orange lighting in which the sun likes to play is created by the presence of the beards that adorn the base of the sepals in their middle part. The clumps of slightly glaucous, sword-shaped leaves grow greener on the outside each year.

Obtained by Cayeux, 2018.

Irises are very easy to associate with other plants, perennials or bushes in flowerbeds. It is only necessary to keep in mind that the clumps will need dividing every 3 or 4 years, so they need to be given sufficient space without competition. To create decorative floral beds throughout the growing season, plant some early varieties of Iris pumila in front of 'Dernier Cri', a smaller cousin whose range comes in many colours of white, yellow, red and blue. In the foreground, you can also place Geranium cinereum Ballerina, a pretty low-growing perennial with pink flowers veined with purple from May to July. And for results all summer long, rely on salvias like Salvia nemerosa Bumbleberry, with its intense fuchsia pink flower spikes.

Iris germanica Dernier Cri in pictures

Iris germanica Dernier Cri (Flowering) Flowering

Flowering

Flower colour two-tone
Flowering time May to June
Inflorescence Cluster
Flower size 13 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 70 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Iris

Species

germanica

Cultivar

Dernier Cri

Family

Iridaceae

Other common names

German Iris, Bearded Iris

Origin

Cultivar or hybrid

Product reference19756

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Planting and care

Does your garden have a sunny area, sheltered from the wind, that is warm and rather dry in summer? This is the ideal location for planting irises! In the shade they will grow but do not flower. They are hardy and do not need winter protection. Well-drained soil is perfect, even if it is rather dry. Iris germanica require alkaline soil: amend yours with lime if it tends to be acidic. Excessively wet soil promotes rhizome rot. Plant from July to September: this allows the rhizomes to grow sufficiently before lifting, and to develop new roots before winter. For best results they should be planted as soon as they are purchased. Plan to divide the iris every 4 years or so to give them fresh soil. They have strong growth and need space to develop and flower well. They are planted with spacing appropriate to the size and vigour of the variety: about 34-50 cm (13-20in) for tall ones (5 to 10 plants per square metre). In a monochrome planting, the rhizomes are planted in a staggered pattern. When mixing colours, it is recommended for the overall aesthetics of the iris bed to plant them in groups of several plants of the same variety. Always consider the direction of rhizome growth by arranging them in a star shape, with buds and leaves facing outward, and spacing them well in relation to other varieties so they have room to develop.

Planting:

Dig a hole that is wide and deep enough for the roots. Make a large conical mound of soil in the hole, on which the rhizome and spread-out roots are placed. Cover the roots. It is important that the rhizome is left just above the surface of the soil. It should not be planted in a depression (risk of rot), so anticipate that the soil will settle and the iris will sink. In clayey or damp soil, the rhizome should even be left raised on a slight mound of a few centimeters. To make the soil adhere to the roots, lightly compact the soil and water it abundantly after planting. Water 2-3 times if necessary until the plant establishes.

Maintenance:

Keep the soil free of weeds by shallow hoeing, taking care not to damage the rhizomes or roots. Weeds create shade for the irises, retain moisture (causing rot), and attract slugs. Similarly, remove dry leaves. If they are diseased (reddish-brown bordered spots of heterosporiosis), burn them. Remove faded flowers to prevent the plant from wasting energy on fruit formation.

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Planting period

Best planting time August to September
Recommended planting time July to October

Intended location

Suitable for Meadow, Rockery
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) 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, lime-rich.

Care

Pruning instructions Cut the flowering stems at the end of the flowering period. If desired, cut the foliage at a slant halfway up in summer using pruning shears.
Pruning Pruning recommended once a year
Pruning time July
Disease resistance Good
Overwinter Can be left in the ground

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