‘Contorta’

Corkscrew , Contorted Filbert, Harry Lauder’s Walking Stick

Brenna Castro | ENH101| Fall 2010 | Favorite Project General Description

 Family:  Habit: Small multi- trunked tree, large  Mature height: 15 feet  Hardiness: Zones 4-8 Uses

 Good specimen  Twisted branches provide year-round interest  Twigs and small branches used in floral arrangements  Can be trained into bonsai (with difficulty)

 Arrangement: Alternate  Shape: Cordate  Margin: Serrate  Abcission: in Autumn  Appearance: Folded or crumpled

 Type:  Sex: Monoecious  Color: Yellow  Size: Male ¾ in. to 1 in.  Size: Female catkins 2-4 in.  Season: Late winter to early spring

 Type: ()  Shape: Spherical to elliptic  Color: Dark brown to purple  Edible: Yes  Season: Fall  Note: Commercially available are sterile Bark and Branches

 Bark color: Light brown  Bark texture: Smooth to slightly crevassed  Branch shape: Twisted, curled Requirements

 Sun: Full sun to part shade  Soil: Some sand to some clay, alkaline  Water: Average  Tolerant of air pollution  Care: prune out suckers in autumn to maintain tree shape Pests and Diseases

 Powdery mildew: powdery white or grey fungus on top of surface. Do not keep leaves moist, clean up debris.  Caterpillars: leafrollers and tent caterpillars - herbivory. Use pesticides or natural predators.  Blight: blossoms, leaves, and discolor, wilt, and die. Avoid wet conditions to discourage spores. Favorite

 Twisted branches look great all year  Catkins and crumpled leaves are pendulous and dramatic  Good specimen tree - small height and multi- trunks Sources

 http://www.finegardening.com/plantguide/corylus-avellana- contorta-harry-lauders-walking-stick.aspx  http://www.robsplants.com/plants/CorylAvell.php  http://davesgarden.com/guides/pf/go/937/  http://www.backyardgardener.com/plantname/pd_2fc6.html  Dreistadt, Steve H. and Jack Kelley Clark. Pests of landscape trees and : an integrated pest management guide. Oakland CA, 2004: ANR Publications. Pages 399-400.