| Scientific Name: | Knautia arvensis |
| Common Name: | field scabious |
| Family Name: | Caprifoliaceae |
| Origin: | Central / west Asia, Europe |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial, Invasive plant |
| Mature Size: | 0.7 - 1.3m x 0.6 - 1.0m (height x width) |
| Habit: | Open, Spreading, Upright |
| Form: | Oval - horizontal |
| Texture: | Medium - fine |
| Landscape Uses: | n/a |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Lobed, Opposite, Basal, Soft flexible, Pubescent, Oblanceolate, Pinnately lobed |
| Flowers: | Umbel, Blue, Violet, Purple, Jul-Aug-Sep |
| Fruit: | Achene, Green, Brown, Jul-Aug, (Persistent) |
| Key ID Features: | |
| Leaves opposite, most oblanceolate, 5-25cm long x 2-10cm wide (decreasing up the stem), margin variable lobing or dentate; spikes are head-like, 1.5-4cm wide, violet to blue to pinkish-purple, penduncle long and glabrous, achenes 4-6mm long, tomentose. <a href ='http://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Knautia%20arvensis' target='_blank'>E-Flora BC</a> | |