| Scientific Name: | Centaurea montana |
| Common Name: | bachelor's buttons |
| Family Name: | Asteraceae |
| Origin: | Europe |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial, Invasive plant |
| Mature Size: | 0.4 - 0.7m x 0.6 - 1.0m (height x width) |
| Habit: | Arching, Spreading, Upright |
| Form: | Oval - horizontal |
| Texture: | Medium |
| Landscape Uses: | Attract beneficial insects, Bedding plant, Perennial border, Rock garden |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Alternate, Soft flexible, Pinnate venation, Pubescent, Elliptic, Lanceolate, Ovate, Entire, Pinnately lobed |
| Flowers: | Head (capitulum), White, Blue, Purple, Apr-May-Jun-Jul |
| Fruit: | Achene, Brown, Oct-Nov |
| Key ID Features: | |
| Leaves sheathing, lanceolate, 10-15cm long x 2-4cm wide, entire or less commonly lobed; flower heads 5-7cm wide, blue with reddish blue centres, whorls of bracts below with black margins, May-Jun. | |