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Iris germanica Mistigri - Bearded Iris

Iris germanica Mistigri
Bearded Iris

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This intermediate bearded garden iris offers fragrant flowers in May in shades of light blue and white, enhanced with bluish veins, a violet-blue edge, and a prominent blue beard. Not very tall (55 cm), it easily fits into borders, among small perennials, or in a large pot. Plant it in full sun, in well-drained, rather calcareous soil.
Height at maturity
55 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -18°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 April to May
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Description

'Mistigri' is a variety of intermediate bearded iris that blooms in spring in a palette of very fresh tones, blending light blue, white and violet-blue. Its undulate flowers open on a sturdy flower stem, less sensitive to wind. It finds its place at the front of perennial borders, along a path edge or in a large pot.

The Intermediate Bearded Irises form a group situated between dwarf bearded irises and tall bearded irises of gardens. Their height ranges from 41 to 70 cm, they flower after the dwarf irises, but before or at the beginning of the season of the tall bearded irises. Their flower stems bear well-formed flowers, shorter and often less heavy than those of tall irises. 'Mistigri' reaches 55 to 56 cm in height when in flower. It can do without staking in a not too windy situation. The flower stems carry several buds that open successively from top to bottom.

This iris belongs to the Iridaceae family. Iris × germanica refers to a group of bearded irises cultivated for a long time in European gardens. The plant is perennial and grows from a fleshy, horizontal rootstock that slowly elongates at the soil surface. It produces leaves arranged in a fan, glaucous green, long, narrow and pointed, which persist more or less in winter. Flowering occurs between late April and May depending on the climate. The flower has a plicata pattern, a term used for irises whose petals are veined, edged or dotted with a more intense colour. In 'Mistigri', the three upright tepals are light blue, the three trailing sepals are white in the centre, traversed by blue veins that intensify towards the margin. The edge of the sepals shows a medium violet-blue, more visible on the undulations. The beard is blue, short and velvety. In this variety, the scent is present, more noticeable in mild weather.

'Mistigri' is a cultivar by Richard Cayeux, registered in 1993 under the seedling number 8709 A. It comes from a cross between 'Purple Fringe' and 'Spinning Wheel'. This selection shows a plicata-type pattern: its light sepals are marked with veins and a coloured edge.

Plant 'Mistigri' in a sunny border, at the front of a bed or along a path. Leave the top of the rootstock exposed and avoid placing plants that are too spreading at its base. Combine it for example with Allium aflatunense 'Purple Sensation', with Nepeta faassenii 'Cat's Pajamas', with Salvia nemorosa 'Caradonna'. Slip a few Stipa tenuissima 'Pony Tails' between the clumps, making sure the rootstocks are clear.

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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 two-tone
Flowering time April to May
Fragrance slightly scented

Foliage

Foliage persistence Semi-evergreen
Foliage colour medium green

Plant habit

Height at maturity 55 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Iris

Species

germanica

Cultivar

Mistigri

Family

Iridaceae

Other common names

Bearded Iris

Origin

Cultivar or hybrid

Product reference26075

Planting and care

Plant the iris 'Mistigri' from July to October, when the rootstock can root before winter, or in spring in heavy soils that remain damp in autumn. Choose a very sunny aspect, with at least six hours of direct sun per day. Prepare a light, loose, rather rich soil, neutral to limestone or slightly acidic, but above all free-draining. 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, back visible 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 stems at the base, but keep the 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 -18°C (USDA zone 7a) 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 flower stalks.
Pruning Pruning recommended once a year
Pruning time May
Disease resistance Good
Overwinter Can be left in the ground

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