Iris Big Dipper
Iris Big Dipper
Iris germanica
bearded iris
Not yet bloomed, to be continued...
MARIE FRANCE B., 02/04/2017
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Description
Everyone knows Iris germanica or bearded iris which has become world famous thanks to the paintings of Van Gogh and Monet. It owes its popularity to its unique design.
Its wide sword-shaped leaves contrast with crumpled, multicoloured flowers held high. The flowers have three large upright petals and three silky, trailing sepals, called "beards". The flowering period lasts a few weeks in May/June. This Iris has large fleshy rhizomes creeping along the ground. It likes light, warmth, and light, well-drained soils. It does not mind cold or summer drought, its enemy is humidity, especially in heavy soils. Stunning in a sunny bed, it is also highly appreciated for cut flowers.
Bearded Iris Big Dipper measures 90cm (35in) high. It bears light yellow petals with medium yellow beards and a gentle fragrance.
It is very resistant and it should be exposed to full sun, in dry and well-drained soil.
Plant the Big Dipper Iris in a bed or border, alongside yarrow, alliums, stipas or roses. It is better to scatter them in groups of three or alone instead of creating standard iris beds.
Iris Big Dipper in pictures
Flowering
Foliage
Plant habit
Botanical data
Iris
germanica
Iridaceae
bearded iris
Cultivar or hybrid
Planting and care
The Big Dipper iris should be planted shallowly, with the rhizome exposed at ground level. Add sand when the soil is too heavy or too wet, and place the rhizomes on small mounds. Ensure good drainage so that the irises do not rot. In summer, this iris should be watered once or twice a month. After flowering, they should be pruned by cutting the flower stalks to 10 cm (4in) from the ground. Damaged leaves should only be removed in autumn. It is not a good idea to provide too much nitrogen as it weakens the plant and increases the number of leaves at the expense of flowers. Taller flower stalks become brittle. Iris can be susceptible to heterosporiosis, a disease characterised by oval brown spots. To prevent it, treat the irises with Bordeaux mixture at the beginning of the growing season. Every 4 years in summer after flowering, divide the clumps by pulling up the entire plant. Take the most beautiful young plants from the rhizome, usually those on the outer edge, and transplant them to a location that has had no irises for a year.
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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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