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 obovate, matte surface, wrinkled, doubly toothed; catkins yellow, male, pendulous, April; fruit nut 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.