Crocosmia Zambesi - Montbretia
Crocosmia Zambesi - Montbretia
Crocosmia crocosmiiflora Zambesi
Montbretia
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Description
The Crocosmia x crocosmiiflora 'Zambesi' is a variety of Montbretia that is vigorous and striking and will significantly impact a summer border. Its tall flower spikes bear large, beautiful flowers that resemble miniature daylilies in their appearance and yellow-orange colour with orange stripes. This tall plant, perennial by its bulb, is generous but not hardy in damp winter soils. However, it can be grown quickly as an annual in the sun in cool but well-drained soil during the growing season. Its flowers also look lovely in a vase.
The Crocosmia (x) crocosmiiflora is a herbaceous perennial plant with corms originating from South Africa and belonging to the Iridaceae family. It was obtained in France by Victor Lemoine around 1880. It shows many similarities with the gladiolus. Our garden montbretias need a lot of humidity throughout their growth and flowering period, as they come from regions where summer rains are abundant. They also like soils rich in compost.
The 'Zambesi' variety, registered in 2008, forms in spring a flexible basal clump of leaves, about 50-60 cm (20-24in) in height, and produces from July to September a curved, bronze-green flower stem that is 1 m (3ft) to 1.10 m (4ft) tall, carrying a horizontal, ramified spike adorned with numerous orange flower buds. They open into flowers about 5 cm (2in) in diameter, comprising six tepals: 3 inner and three outer petals. The tepals are traversed by a deep orange central line extending in a circle around the flower's base. Their slightly translucent texture allows the sun to enhance these hot colours. The dark green leaves are sword-shaped, with a plicate and strongly veined surface, and fan out or form a dense cluster from the base of the plant. The storage organ of Crocosmia is a corm, which is an underground pseudo-bulb that resembles a bulb but is formed by a swollen stem surrounded by scales. The above-ground vegetation disappears in winter, while the corm goes dormant, preferably in dry soil.
Half-bulb half-shrub Montbretias are symbols of summer. Easy to grow, vigorous, and not demanding, they can be planted in the sun in fertile and excellent soil. Their bright colours, yellow, orange, or red, create cheerful spots of colour in gardens. They look splendid when combined with annuals or shrubs. They are well suited for natural gardens, mixed with perennials (Buenos Aires Verbena, Hastate Verbena) or grasses (Stipa tenuifolia, Panicum virgatum Kulsenmoor...). When they thrive in open ground, in sunny exposure and well-drained soil, they multiply over the years and become more beautiful yearly. They are also excellent flowers for your bouquets.
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Flowering
Foliage
Plant habit
Botanical data
Crocosmia
crocosmiiflora
Zambesi
Iridaceae
Montbretia
Cultivar or hybrid
Planting and care
Plant crocosmias in full sun, preferably in spring. They need well-drained and aerated soil that does not retain too much water in winter when they remain in the ground. Work the soil well at the time of planting, and if necessary, incorporate some sand. They should be covered with a minimum of 5 to 8 cm (2 to 3in) of soil (the more they are buried, the better they resist frost) and spaced about fifteen cm apart. They like rich soils. Apply fertiliser at the time of planting and reapply it every spring. While they prefer well-drained soil in winter, crocosmias need plenty of water during their growing season and cannot tolerate any drought in summer. In regions with harsh winters, it is advisable to dig up the corms once the foliage has dried out and store them in a frost-free location. Another alternative is to cover the bed with a thick insulating layer at the beginning of winter and remove it in March.
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).
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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.