Carex lenta Osaka
Carex lenta Osaka
Carex lenta Osaka
Japanese Sedge
A strong plant.
Sophie, 21/02/2024
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This plant carries a 12 months recovery warranty
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Description
Carex lenta 'Osaka' is a rare evergreen grass that stands out for its particularly graceful appearance, both in terms of its foliage and its flowering. This perennial is decorative throughout the year. It forms an olive-green clump from which long arched inflorescences emerge. It is a hardy and robust plant in moist to wet soil. Plant it in full sun or partial shade, along the edge of a border, near a water feature, or in a pot on a patio.
Carex lenta 'Osaka' is a sedge belonging to the large Cyperaceae family, native to Japan, China, and the Himalayas. This type of small grass with short rhizomes forms a clump with an upright and trailing habit, dense at the base, about 50cm (20in) in height and 30cm (12in) in width. Its evergreen leaves are arched, sheathing at the base, measuring 2mm (1in) in width and approximately 40cm (16in) in length. Their edges are tapered and their tips are trailing. They have a shiny medium olive-green colour. Between July and September-October, short cream spikes of 2 to 4cm (1 to 2in) appear among the foliage, carried by thin and arched stems measuring 50 to 60cm (20 to 24in) in length. At maturity, they turn a darker brown colour. This flowering persists on the plant throughout winter.
The 'Osaka' sedge is a small perennial with a neat style, perfect for lightening flower beds in moist to wet soil. Plant it en masse in large borders, pair it with persicarias, the lush foliage of rodgersias, the fronds of ferns, and colourful heucheras. As this grass appreciates moist to wet soils, it will naturally find its place in water gardens, among mossy stones arranged on the banks or along the edge of a water feature, where it will help to stabilise the ground. It also works well along the edges of perennial beds. For a beautiful wild effect, plant it in groups in a contemporary or countryside garden.
Carex lenta Osaka in pictures
Flowering
Foliage
Plant habit
Botanical data
Carex
lenta
Osaka
Cyperaceae
Japanese Sedge
Cultivar or hybrid
Planting and care
Carex lenta 'Osaka' prefers moist soils, that are not too chalky. It tolerates very wet areas well. It requires a sunny to semi-shaded exposure. This easy-to-grow grass requires very little maintenance. Plant outside frost periods and water abundantly during planting. Avoid heavy fertiliser applications. Remove damaged foliage during the growing season and clean the clump at the end of winter, just before the start of vegetation.
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.
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