Elymus repens (L.) Gould
Elymus repens, commonly known as couch grass, is a grass.
Elymus repens was already described and the name validly published by Carl Linnaeus. It was Frank Walton Gould, however, who reclassified it into todays valid botanical systematics in 1947.
The grasses are comparatively fast-growing and reach heights of 30 to 120 centimetres. The plants reach a width of 30 to 60 centimetres.
Elymus repens is deciduous. The dark-green, simple leaves are alternate. They are linear with entire margins and parallel venation.
Flowers and Fruits
Elymus repens produces flowers that are arranged in spikes from June to August.
The grasses produce brown caryopses in spring.
The plants form rhizomes.
Elymus repens is native to the whole of Europe, eastern Canada, Maine, Sibiria and North Africa and is naturalized in the US and Mexico.
The grasses prefer a sunny situation on moist soil. They prefer sandy-loamy, gritty-loamy or sandy clay soil with a pH between 5,2 and 7,8. The plants need a soil depth of at least 36 centimetres for good growth.
The recommended planting distance is 30 to 45 centimetres.
Maintenance and Propagation
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe 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.