| Scientific Name: | Psephellus dealbatus ( syn. Centaurea dealbata ) |
| Common Name: | Persian cornflower, knapweed |
| Family Name: | Asteraceae |
| Origin: | Central / west Asia |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial |
| Mature Size: | 0.4 - 0.7m x 0.3 - 0.6m (height x width) |
| Habit: | Upright |
| Form: | Oval - vertical |
| Texture: | Fine |
| Landscape Uses: | Attract beneficial insects, Attract butterflies, Cut flower or foliage, Group or mass planting, Perennial border, Tall background, Woodland margin |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Lobed, Alternate, Basal, Soft flexible, Pinnate venation, Pubescent, Obovate, Entire |
| Flowers: | Head (capitulum), White, Blue, Violet, Purple, Pink, May-Jun-Jul-Aug-Sep |
| Fruit: | Achene, Brown, Sep-Oct |
| Key ID Features: | |
| Basal leaf petioles 25-35cm long, blades pinnately-lobed, 30-45cm long x 10-15cm wide, irregularly to deeply divided (sometimes appearing as false leaflets but midrib blase tissue present at least near the apex), lower surface covered in silver hairs; flowering stem leaves alternate; flower heads appear shaggy, up to 5-8cm wide; florets commonly pinkish (less commonly bluish, purplish, or white). | |