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Iris germanica Bel Azur - Bearded Iris

Iris germanica Bel Azur
Bearded Iris

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A pure light blue intermediate iris, sought after in this group where true blues are rare. The flowers, of good size for a border iris, display azure blue petals and sepals around white beards. The plant, which reaches 60 cm in height, blooms generously in April and May. To be planted in full sun, in fairly rich, well-drained soil.
Height at maturity
60 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -29°C
Soil moisture
Dry soil
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Best planting time July to October
Recommended planting time February to April, September to November
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Flowering time May
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Description

'Bel Azur' is an intermediate garden iris of medium size, sought after for its uniform light blue flowering. Its flower is neither mauve nor lavender: it displays a clear azure hue on both petals and sepals, and is adorned with white beards that enhance this impression of clarity. It is also a floriferous variety, highly visible in borders, which precedes the large Iris germanica in spring.

This plant grows from fleshy, horizontal rootstocks at soil level, which multiply and gradually extend outward. The foliage, glaucous green, consists of erect sword-shaped leaves. The flower stem reaches 55-60 cm from the ground. A well-established plant occupies 35-45 cm in width after two or three seasons. Flowering occurs in mid-season of intermediate irises, usually in May in a medium climate. The flowers show the classic architecture of bearded irises: three upright petals in the centre, three trailing sepals, and a visible beard on each sepal.

'Bel Azur' is a French creation by Richard Cayeux, registered in 1993 and introduced by Iris Cayeux the same year. Its seedling number is 8713 C. Its parentage combines the cultivars 'Open Sky' and 'Swirling Seas'.

Plant this iris 'Bel Azur' in groups of three rootstocks spaced 30-35 cm apart, in a border of a bed, on a slope, or at the front row of a bed of tall irises. It will make an impact from the second flowering. Nearby, you can plant Geranium cinereum 'Ballerina' which remain low and flower pink after the irises, Allium 'Purple Sensation' which raise purple-violet balls in May, and Nepeta 'Purrsian Blue' which will take over in summer.

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Garden iris, bearded iris: planting, care
Family sheet
by Virginie T. 13 min.
Garden iris, bearded iris: planting, care
Read article

Flowering

Flower colour blue
Flowering time May

Foliage

Foliage persistence Semi-evergreen
Foliage colour medium green

Plant habit

Height at maturity 60 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Iris

Species

germanica

Cultivar

Bel Azur

Family

Iridaceae

Other common names

Bearded Iris

Origin

Cultivar or hybrid

Product reference26067

Planting and care

Plant Iris 'Bel Azur' from July to October, when the rootstock can root before winter, or in spring in heavy soils that remain moist in autumn. Choose a very sunny position, with at least six hours of direct sunlight per day. Prepare a light, friable, rather rich soil, neutral to calcareous or slightly acidic, but above all well-drained. In clay soil, plant on a slight mound and mix gravel or coarse sand into the planting soil. Place the rootstock almost at the surface, top exposed to the sun, then cover only the roots. Water after planting, then only during prolonged droughts in the first year. Remove faded flowers as they appear. Cut the spent flower stalks at the base, but keep healthy leaves until they yellow. Apply some well-rotted compost in spring, around the clump, without covering the rootstocks. Divide the clumps every three or four years, in summer, when the centre flowers less.

Planting period

Best planting time July to October
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow, Rockery
Type of use Border, Edge of border, Slope
Hardiness Hardy down to -29°C (USDA zone 5) 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 well-drained, fairly rich

Care

Pruning instructions Cut off the faded floral stems.
Pruning Pruning recommended once a year
Pruning time May
Disease resistance Good
Overwinter Can be left in the ground

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