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Value-for-money

Iris hollandica Blue Magic - Dutch Iris

Iris x hollandica Blue Magic
Dutch Iris

4,6/5
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High quality bulbs.

sev33, 25/10/2024

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This Dutch iris is one of those that make you love blue flowers. Its flower, with an intense and uniform cobalt blue colour, barely tinged with violet, is illuminated on the sepals by a beautiful golden yellow spot, surrounded by a white margin. Easy to cultivate in well-drained soil, it blooms in late spring and rests in summer. Plant it in autumn, in groups of 10 bulbs, it will come back every year and naturalise over time.
Flower size
9 cm
Height at maturity
50 cm
Spread at maturity
10 cm
Exposure
Sun
Hardiness
Hardy down to -20°C
Soil moisture
Dry soil, Moist soil
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Best planting time October to November
Recommended planting time September to October
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Flowering time May to June
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Description

The Iris (x) hollandica 'Blue Magic', planted in large groups, forms a sea of striking blue. This bulbous iris produces, in late spring, for 2 to 3 weeks, flowers of a cobalt blue, barely purplish, intense, illuminated by magnificent golden yellow spots surrounded by a white margin. Elegant, brightly coloured, the stylised flowers of the Dutch Iris stand out for their elegance in the garden, but also in bouquets. They are easy to grow in full sun, in fertile and well-drained soil.

The Dutch Iris, or bulbous iris, has an underground storage organ in the form of a bulb and not a rhizome like its famous cousins the Iris germanica, or Garden Iris. Belonging to the same botanical family as the latter, the iridaceae, they also differ from them by the absence of "beards", those pretty little fluffy and colourful tongues found on the drooping sepals of the germanica iris. The first iris (x) hollandica never grew in the wild on Dutch soil, but are the result of cross-breeding between 2 main botanical species: the Iris filifolia, sometimes confused with the Iris xyphium which resembles it, both native to Spain and North Africa, and the Iris tingitana, from Tangier and northern Morocco. The genealogy of Dutch hybrids is sometimes confusing, but the result is always remarkable. Their flowers, somewhat underused in the garden, are highly appreciated in floristry. 

The cultivar 'Blue Magic' forms an erect and very narrow clump, over time, of 50 cm (20in) when in bloom, this perennial extends without theoretical limit through the production of bulblets. This cultivar blooms in late spring, usually in May-June, for 2 to 3 weeks, on sturdy stems braving the wind. Its solitary or paired flowers on the stems, 8 to 10 cm (3 to 4in) in diameter, are relatively thin compared to those of the Iris germanica, but of undeniable elegance. They are of an intense and deep blue, very uniform. Each one is composed of 3 upright, slender, translucent petals of small size. Beneath this trio are displayed 3 almost horizontal petals, closely linked to the dentate petaloid styles on the edge, arranged in a quincunx pattern. Wider, they are spatulate, streaked with darker veins, illuminated by a beautiful golden yellow spot surrounded by a more or less wide white margin. Each flower can last 5 to 7 days, even in a vase. The bulb is round, 2 to 3 cm (1in) wide, covered with a fibrous tunic of a pinkish beige colour. It produces some linear, thin and leathery leaves, somewhat reminiscent of grass leaves, with a slightly glaucous green color, often slightly striated and folded in half towards the ground. They often appear in autumn, persist more or less depending on the severity of the winter, and dry up in summer, during the dormant period.

Less known and less used by gardeners than the Iris germanica, the Dutch Iris are nevertheless easy to grow in fertile and light soil, of unquestionable elegance and indifferent to wild grasses that struggle to infiltrate their very vertical clumps. Plant them in groups of 10 to 20 bulbs of the same variety: they will come back year after year to offer you even more elegant and joyful flowers, which go well with the spring flowering shrubs. They are also stunning when planted among perennials such as peonies and daylilies, which will hide their absence in summer when they are dormant. Their Mediterranean origins give them excellent adaptation to summer drought. Finally, pick their flowers to make bouquets with roses, arums, lilies or even late tulips. All irises need a sunny exposure to flower well. Give them at least half a day of full sun.

Iris hollandica Blue Magic - Dutch Iris in pictures

Iris hollandica Blue Magic - Dutch Iris (Flowering) Flowering

Plant habit

Height at maturity 50 cm
Spread at maturity 10 cm
Growth rate normal

Flowering

Flower colour blue
Flowering time May to June
Inflorescence Solitary
Flower size 9 cm

Foliage

Foliage persistence Semi-evergreen
Foliage colour medium green
Foliage description Deciduous foliage in summer.

Botanical data

Genus

Iris

Species

x hollandica

Cultivar

Blue Magic

Family

Iridaceae

Other common names

Dutch Iris

Origin

Cultivar or hybrid

Product reference837031

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Planting and care

Plant the bulbs in September-October, in a sunny location, in ordinary but fertile, deep and well-drained soil (even sandy or rocky). Add some coarse sand or compost to your soil if necessary. Plant the bulbs 10 cm (4in) deep and preferably in groups of the same variety, spaced 10-15 cm (4-6in) apart. Cut off the faded flowers at their base, taking care to leave the stem. Continue to water the plants at their base. Once the foliage turns yellow, remove it and leave the bulbs in place for them to flower again next year. After flowering, water with liquid fertiliser three times at one-month intervals. Leave the bulbs in place for several years. Dutch Irises rest in summer, preferably in dry soil. Their bulbs dislike constantly wet soil during the summer resting period.

Divide the clumps after 4 to 5 years, when they appear less floriferous. Do this once the leaves have dried, at the beginning of the resting period.

The leaves of the Dutch Iris should only be cut when dry: they allow the bulb to replenish its reserves for the following spring flowering. Remove the pods when they form, so that the plant does not exhaust itself producing seeds.

Planting period

Best planting time October to November
Recommended planting time September to October
Planting depth 10 cm

Intended location

Suitable for Meadow, Rockery
Type of use Border
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Amateur
Planting density 50 per m2
Exposure Sun
Soil pH Neutral
Soil moisture Dry soil, Moist soil, Well-drained soil, neutral, even dry in summer.

Care

Pruning instructions Remove the faded flowers so that the plant does not exhaust itself by producing seeds.
Pruning Pruning recommended once a year
Pruning time June
Soil moisture Dry soil, Moist soil
Disease resistance Very good
Overwinter Can be left in the ground
4,6/5
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