Carex riparia
Carex riparia
Carex riparia
Carex riparia
River Sedge, Greater pond Sedge, Greater bank Sedge
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Description
Carex riparia is a perennial evergreen herbaceous clump-forming plant that thrives in damp to marshy areas. With a spreading bushy habit, its wide, long, rigid, glaucous green leaves reach 1m (3ft) in height with an 80cm (32in) spread. The inconspicuous flowering spikes that rise above the leaves are of no decorative interest. This sedge has trailing stolons that allow it to spread rapidly and colonise large areas. It is an invasive plant and is therefore useful when planted en masse to stabilise sunny banks of a body of water or a watercourse. However, its rapid spread can be a disadvantage in a small garden.
Carex riparia, also known as the river sedge, is widely found in wet areas and along waterways throughout Europe and Asia. It is an herbaceous species in the Cyperaceae family that can be quite invasive in marshy conditions. It is a tall carex with trigonous stems, meaning they have a triangular cross-section, and leaves that are 6 to 15mm (1in) wide and can reach up to 1.6m (5ft) in height. From May to July, the 3 to 10cm (1 to 4in) long spikelets, consisting of 3 to 5 brown, pointed, and flexible spikes, tower over the foliage. It is the quintessential perennial plant for riverbanks. This carex can be planted at a depth of 10cm (4in) in water. It also withstands temporary droughts.
Carex riparia in pictures
Flowering
Foliage
Plant habit
Botanical data
Carex
riparia
Cyperaceae
River Sedge, Greater pond Sedge, Greater bank Sedge
Western Europe
Planting and care
A hardy species that is easy to grow. It colonises damp, heavy and marshy soils. It also tolerates any ordinary moist soil, preferably in full sun.
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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