| Scientific Name: | Elymus repens ssp. repens |
| Common Name: | quackgrass, couchgrass |
| Family Name: | Poaceae |
| Origin: | Central / west Asia, Europe |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial, Invasive plant, Poales (grass-like), Weed (horticultural) |
| Mature Size: | 0.7 - 1.3m x 0.3 - 0.6m (height x width) |
| Habit: | Spreading, Upright |
| Form: | Vase |
| Texture: | Fine |
| Landscape Uses: | Erosion control |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Well-drained |
| Leaves: | Grass-like, Alternate, Soft flexible, Glabrous, Linear, Entire |
| Flowers: | Spikelet, Green-yellow, Jun-Jul-Aug |
| Fruit: | Grain (caryopsis), Brown, Sep-Oct |
| Key ID Features: | |
| Stems (culms) 40-150cm tall; rhizomes long, aggressive, sharp-pointed with yellowish tips; leaves linear, 15-40cm long x 3-10mm wide at the base of the plant, with leaves higher on the stems 2-8mm wide, vernation rolled, blade rough on the upper surface, not glossy, auricles ~1mm long, slender and overlapping to clasp the culm, ligule 0.5-1mm long, sheath not compressed, base with trichomes; flower spike 10-30cm long, spikelets 1–2cm long x 5-7mm wide x ~3mm thick with three to eight florets, glumes 7-12mm long, usually without an awn or with only a short one. <a href ='https://en.wikipedia.org/wiki/Elymus_repens' target='_blank'>Wikipedia</a> | |