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Iris du Japon - Iris ensata Dinner Plate Blueberry Pie
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Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 12 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Iris ensata 'Dinner Plate Blueberry Pie' is a spectacular Japanese water iris that produces huge flat, more or less double, velvety flowers, of a beautiful bluish-violet colour with purple highlights, animated by small yellow signals in the centre. It is a mid-season variety that usually flowers in July. In contrast to our garden irises, this rhizomatous perennial is comfortable in non-limestone and waterlogged soils in summer. Superb when planted in mass in wet areas and on the banks of water points, Iris ensata were once intensely cultivated in Japan, especially around Edo (the ancestor of Tokyo), for cut flowers.
Iris ensata (synonym kaempferi), hanashōbu in Japanese, better known as Japanese Water Iris, have nothing in common with our classic garden irises, except for their membership in the Iridaceae family. The original Iris ensata is a fibrous rhizome plant native to Asia, specifically from the wetlands of Japan, the Himalayas, and Siberia. These irises, known to be difficult to cultivate, like acidic and peaty soils (cannot tolerate excess limestone), are thirsty for water during their growth and flowering period, but appreciate slightly less damp soils in winter : in nature, they are found above the often low winter water level, which rises again in spring with the melting snow.
The cultivar 'Dinner Plate Blueberry Pie' is a recent horticultural creation from the 'Dinner Plate' series, which brings together varieties with oversized and remarkably coloured flowers. This magnificent 'Blueberry Pie' variety forms an erect, rather upright clump composed of fine leaves. The plant will reach approximately 60cm (24in) in height when in bloom and 50cm (20in) in width. This iris slowly spreads on the ground through its rhizomes, beautifying year after year. The foliage, deciduous in winter, of a medium green colour, is composed of long, slender, sheathing leaves with a prominent central vein. The non-remontant flowering is in summer, more or less early depending on the climate. Flower stems emerge from the clumps of leaves. Each one carries 2 to 3 very large flat flowers with a diameter of 15cm (6in). Each flower is composed of 6 large, flat, horizontal sepals, very undulated, topped with 3 slightly smaller petals and 3 erect styles. The sepals are a dark bluish-violet, more purple towards the edge. In the centre of the flower, bright yellow signals illuminate the whole.
Often cultivated on the banks of ponds and basins, Iris ensata, like many marsh plants, can live with their "feet" in water during summer, but their rhizomes do not tolerate being submerged during winter, especially if it is freezing. In our gardens, these Japanese irises will thrive in loamy soil, well lightened with compost, but not drying out in summer. For example, plant them in a heavy soil forming a slight depression, at the bottom of a slope, or on a bank that becomes moist through capillarity. Associate Iris ensata 'Dinner Plate Blueberry Pie' with Anemone rivularis, Darmera peltata, Lobelia 'Queen Victoria', Astilbes, Lysimachias and Ligularias for example.
Flowering
Foliage
Plant habit
Botanical data
Iris ensata prefer a damp and marshy, turf, limestone-free soil. They also tolerate a simply moist soil, even if it is not waterlogged, as long as it does not dry out in summer. On the other hand, they prefer a rather dry soil in winter. We have planted them near an artificial stream, where the water level is kept high during the summer. In winter, we let the level drop by about 15cm (6in), so that the stumps are above the water, as in nature where the river levels decrease in winter and rise again in spring with the melting of snow. Their cold resistance is excellent up to about -18°C (-0.4°F). It is even increased if the soil is dry.
Planting period
Intended location
Care
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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).
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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 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:
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.