Iris sibirica Blue King - Siberian Iris
Iris sibirica Blue King - Siberian Iris
Iris sibirica Blue King - Siberian Iris
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Camille R.
Iris sibirica Blue King - Siberian Iris
Camille R. • 77 FR
Marie Laure L.
Iris sibirica Blue King - Siberian Iris
Marie Laure L. • 44 FR
Iris sibirica Blue King - Siberian Iris
Iris sibirica Blue King
Siberian Iris, Siberian Flag
The iris, which had remained small until today. I went to see it and there is a very small flower. Nothing like the image presented at the time of purchase. I'm attaching a photo. The young plant is 25cm (10in) tall and the flower measures between 5 to 7cm (2 to 3in) in diameter. A bit disappointed.
Marie-Thérèse, 18/05/2022
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Description
Iris sibirica Blue King is a majestic variety of Siberian iris that offers large and elegant flowers, in a very pure violet blue or royal blue colour, veined with white at the throat. They bloom in June, dominating a dense clump of leaves that remains beautiful for many months. Appreciated for their graceful flowers and graphic foliage, Siberian irises are vigorous and beautiful plants of wetlands, unlike their cousins Iris germanica. They are also very hardy irises, which will thrive in good garden soil. Irreplaceable near water, provided that the stumps are not submerged in winter, they are perfectly suitable for naturalistic, English, and even contemporary style gardens.
Iris sibirica 'Blue King' is a rhizomatous and deciduous perennial plant, with an upright tufted growth habit from spring. It belongs to the Iridaceae family. It is one of the many cultivars obtained from Iris sibirica, native to Central Europe, Eastern Europe, and Turkey (but absent from Siberia), and Iris sanguinea present in China, Siberia, Japan, Manchuria, and Korea. This blue iris will reach about 1.20 m (4ft) in flower, 70 cm (28in) in height for the foliage, and the clump will spread over about 50 cm (20in). Its growth is moderate, slower than that of Iris germanica. This plant has an erect, elegant growth habit, in a dense clump. The foliage consists of long, narrow leaves of a somewhat greyish green colour. In June, the floral stems project above the foliage, bearing solitary flowers with 3 sepals and 3 petals, succeeding from the tip of the stem to the lower branches. This iris spreads through rhizomes, its vegetation disappears in winter.
The 'Blue King' Siberian iris is perfect near a water feature or a stream, or simply in very wet soil. It can also be used in any type of garden that never completely dries out in summer. Its grace is perfectly suited to romantic gardens, English gardens, and other mixed borders. It can be associated with all plants that thrive in moist soil: summer snowflake, camassia, poet's narcissus, montbretia, daylilies, astilbes, meadowsweets, phlox, tall asters, meadowsweet, etc.
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Iris sibirica Blue King - Siberian Iris in pictures
Flowering
Foliage
Plant habit
Botanical data
Iris
sibirica
Blue King
Iridaceae
Siberian Iris, Siberian Flag
Cultivar or hybrid
Planting and care
The 'Blue King' Siberian iris tolerates moist conditions, such as on a riverbank, as long as it is not permanently submerged. It can also be grown in ordinary garden soil, with a mulch and watering every 15 days in summer. It thrives in slightly acidic to slightly alkaline soil (pH 4.5 to 7.5), which is rich and well-drained. Soil that is too heavy with clay, too alkaline, or too sandy can be improved by adding a good amount of humus (well-decomposed compost). An alkaline soil can be slightly acidified by adding heather soil or peat or pine needles.
Siberian irises require a sunny location to flower, with at least 6 hours of daily sunlight. In hotter regions, light shading during the hottest hours may be beneficial. It is best to plant during the dormant period, from late September to mid-April, avoiding frost periods. In warm climates, planting can be done in September. However, in regions with cold winters, planting should be done in late March or April. (They will only flower the following year). Planting can also be carried out in August.
Plant Iris Siberica rhizomes at a depth of 3-5 cm (1-2in). Siberian irises can remain in place without division for longer periods than bearded irises. They should only be divided every 5 to 10 years, when the clump no longer flowers in the centre or forms a crown. Sufficient space should be provided for the clumps to develop properly. On young clumps, systematically remove faded flower stalks. On well-established clumps, remove the stalks to prevent self-seeding from non-true-to-type offspring.
After autumn frosts, yellowed foliage can be cut back to 3-5 cm (1-2in) from the ground (and left in place as mulch). Alternatively, this dry foliage can be left during winter as an "architectural" element in the garden. It should only be cut back at the end of winter, in late February, before new leaves start to grow.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.