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Iris pumila Crispy - Dwarf bearded Iris

Iris pumila Crispy
Dwarf bearded Iris

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A miniature Iris that blooms very early, in March-April. Its wavy flowers are pure white, with light yellow beards. Ideal for rockeries, borders, troughs and green roofs. 
Flower size
5 cm
Height at maturity
18 cm
Spread at maturity
25 cm
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil moisture
Dry soil, Moist soil
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Best planting time August to October
Recommended planting time February to March, July to October
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Flowering time March to April
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Description

Dwarf Bearded Iris 'Crispy' is a miniature bearded iris that blooms particularly early in March-April. Its wavy flowers are pure white, with light yellow beards. This dwarf variety forms pretty clumps that colonize the soil, perfect for creating a beautiful spring display in rockeries, planters, and borders.

Iris 'Crispy' is a rhizomatous perennial plant. It is a horticultural creation by Walter Welch dating back to 1958 classified in the horticultural category of Miniature Dwarf Bearded Irises (MDB), and possesses the genes of Iris pumila, among others, which blooms in rocky meadows in Central Europe and Asia. All these plants belong to the Iridaceae family.

Irs 'Crispy' Iris forms small upright clumps of deciduous foliage from spring. The plant will reach 18 cm (7in) high when flowering, and the clump will spread without a theoretical limit over time, with the centre rhizomes becoming bare in favour of the outer rhizomes. The foliage consists of thin and long sword-shaped, slightly glaucous green leaves. Short flowering stems appear in March and bloom in April, earlier or later depending on the climate. The flowering stems generally bear a solitary flower at their tip which is quite large in comparison to the plant. The white flower has three upright petals above 3 large drooping sepals. The beards are light yellow.

To accompany  dwarf irises, choose plants based on their needs (exposure, soil...), growth (low-growing plants or light foliage), decorative appearance and flowering date. For example, Gauras will cast little shade on them and will keep the faded iris bed attractive throughout the summer. Eschscholzia will be happy with dry and poor soil, just like iris. Geraniums, salvias, and Libertia also accompany irises very well. Slopes and terraced edges can be stabilised by a dense planting of old diploid varieties that require little care.

Use the entire range of irises for rockeries, stony and dry meadows, limestone plateaus, rocky slopes and green roofs. Border edges are usually the domain of border irises, but can also accomodate dwarf irises!

Flowering

Flower colour white
Flowering time March to April
Inflorescence Cluster
Flower size 5 cm

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 18 cm
Spread at maturity 25 cm
Growth rate normal

Botanical data

Genus

Iris

Species

pumila

Cultivar

Crispy

Family

Iridaceae

Other common names

Dwarf bearded Iris

Origin

Cultivar or hybrid

Product reference177321

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Planting and care

Do you have a sunny, warm location, dry in summer?
This is the ideal location for dwarf irises! In shade, they grow but do not flower. They are hardy and do not need winter protection. Well-drained soil is perfect, even dry and chalky. Too much moisture promotes rhizome rot. Plant from July to September to allow the rhizomes enough time to grow and develop new roots before winter. They should be planted as soon as they are purchased for better results. Plan to divide irises every 4 years or so to give them fresh soil. They have strong growth and need space to develop and flower well. Planted with a spacing adapted to the size and vigour of the variety: approximately 34-50 cm (13-20in) for tall ones. In a monochrome planting, the rhizomes are planted in staggered rows. To create a mix of colours, plant them in groups of several plants of the same variety. Always consider the direction of growth of the rhizomes by arranging them in a star shape, with buds and leaves facing outwards, and spacing them well away from other varieties so they have room to develop.

Planting

Dig a hole that is wide and deep enough. Make a conical mound of soil in the hole and place the rhizome and spread out roots on top of it. Cover the roots. The rhizome  must be left just above the surface of the soil. It should not be planted in a dip (risk of rot), so anticipate that the soil will settle and the iris will sink. In clayey or damp soil, the rhizome can even be left raised on a slight mound. To make the soil cling to the roots, lightly firm and water abundantly after planting. Water 2-3 times if necessary until it is established.

Maintenance:

Keep the soil weed-free by lightly hoeing, taking care not to damage the rhizomes or roots. Weeds shade the irises, retain moisture (causing rot), and attract slugs. Similarly, remove dry leaves. If they are diseased (reddish-brown bordered spots of heterosporosis), burn them. Remove faded flowers.

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Planting period

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

Intended location

Suitable for Rockery
Type of use Edge of border, Container, 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 stems at the end of flowering.
Pruning Pruning recommended once a year
Pruning time April
Disease resistance Good
Overwinter Can be left in the ground

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