Carex flacca

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Carex flacca Schreb.

Cyperaceae

Life form: grass

Exposure: sun - Exposure: half shade   5

Moisture: dry

Soil: gritty loam

Arrangement: alternate
Leaves: decidious

Shape: linear

Division: simple

Shape: not specified
Fruit: nut

134B / 229143 

Inflorescence: spike

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Liliopsida
Subclassis:
Commelinidae
Superordo:
Juncanae
Ordo:
Cyperales

Carex flacca is a grass.

Naming

Carex flacca was described by Johann Christian Daniel von Schreber in 1771. The name is considered as validly published.

Taxonomy

Carex flacca is a species in the genus Carex which contains approximately 2264 to 2485 species and belongs to the family of the Cyperaceae (Sedge Family). The type species of the genus is Carex hirta.

Characteristics

Growth

The grasses are comparatively slow-growing and reach heights of 20 to 35 centimetres. The plants reach a width of 30 to 60 centimetres.

Leaves

Carex flacca is deciduous. The bluish green, simple leaves are alternate. They are linear with entire margins and parallel venation.

Flowers and Fruits

Carex flacca produces spikes of green flowers from May to July. The plants are dioecious.

The grasses produce nuts.

Root System

Distribution

Carex flacca is native to the whole of Europe, Turkey, northern Iraq, Cyprus, the Caucasus, Iran, Pakistan and North Afrika.

Cultivation

The grasses prefer a sunny to half-shady situation on dry soil. The substrate should be gritty loam with a pH between 8 and 10. They tolerate temperatures down to -29°C (USDA zone 5).

Classification after Prof. Dr. Sieber

  • open areas

Tolerance of special soil conditions

  • none: drought

Uses

The recommended planting distance is 30 to 40 centimetres, the grasses are best planted in groups of 5 to 10. Suited for rockeries, roof greening and for mixed borders, as well as suited as groundcover, container plant and as specimen plant.

Maintenance and Propagation

  • Remove runners if no spreading is desired.

Propagate by division.

Cultivars

Pests and Diseases

Honeydew, galls and distorted leaves are a sign for an infestation with aphids. Use an insecticide or control biologically , e.g. with parasitic wasps or predators such as Aphidoletes aphidimyza.

Brown, orange or yellowish pustules on shoots and on the leaves lower surfaces are very likely caused by a fungal infestation (rust). Remove affected parts and apply fungicide. Also improve ventilation and reduce humidity.

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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