| Scientific Name: | Corylus avellana 'Contorta' |
| Common Name: | contorted European filbert, Harry Lauder's walking stick, corkscrew hazel |
| Family Name: | Betulaceae |
| Origin: | Europe, Garden origin |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Shrub - deciduous, Tree - deciduous |
| Mature Size: | 3 - 5m x 2 - 3m (height x width) |
| Habit: | Irregular, Stiffly upright |
| Form: | Irregular, Oval - vertical |
| Texture: | Medium |
| Landscape Uses: | Cut flower or foliage, Fall interest, Specimen plant, Wildlife food, Winter interest |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Alkaline, Rocky or gravelly or dry, Well-drained |
| Leaves: | Simple, Alternate, Leathery, Heavily veined, Pinnate venation, Rugose, Pubescent, Orbicular, Double serrate, Undulate (wavy) |
| Flowers: | Catkin (ament), Green-yellow, Brown, Mar-Apr |
| Fruit: | Nut, Brown, Sep-Oct |
| Key ID Features: | |
| Small tree/shrub, curled/twisted branches; leaves alternate, obovate, 6-12cm long x 4-8cm wide, matte surface, wrinkled, doubly toothed; catkins yellow, male, pendulous, Apr; nut 1-2cm wide with leafy involucre. Winter ID: twigs contorted, with stiff hairs and immature male catkins mostly in 3's near tips; buds green-pale brown, chubby. | |