Scientific Name:
Corylus colurna
Pronunciation:
KORE-ih-lus koh-LUR-nuh
Common Name:
Turkish filbert, Turkish hazel
Family Name:
Betulaceae
Plant Type:
Tree - deciduous
Key ID Features:
Trunk short with dense, horizontal, low branching; leaves alternate, broadly ovate to obovate, most blades 8-13cm x 6-10cm wide, double-toothed; catkins (male) up to 8cm long in March; nuts 1-1.5cm long x 8-10mm wide, spiny and hairy husks extend beyond the 4-6 nuts they enclose. Winter ID: bark grey but may flake off on mature trees to reveal an orange-brown inner bark.
Habit:
Upright
Form:
Pyramidal - widely
Texture:
Medium - coarse
Mature Height:
22 - 30m
Mature Spread:
10 - 15m
Growth Rate:
Fast
Origin:
Central / west Asia, Europe
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Acidic, Humus rich, Well-drained
Water Use:
Moderate, Summer dry
Landscape Uses:
Shade tree, Street (boulevard tree), Wildlife food
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible
Surfaces:
Pubescent
Colour in Summer:
bright green
Shapes:
Obovate, Ovate
Apices:
Acute, Cuspidate
Bases:
Cordate
Margins:
Double serrate
Inflorescence Type:
Catkin (ament)
Flower Morphology:
Monoecious plant
Number Of Petals:
0
Colour (petals):
Yellow, Green
Flower Scent:
None
Flower Time at Peak:
Mar
Additional Info:
Female catkins are inconspicuous; yellow male catkins to 8cm long
Fruit Type:
Aggregate fruit, Edible, Nut
Fruit Colour:
Green, Brown
Fruiting Time:
Sep, Oct
Additional Info:
Not showy, Accessory tissue, Edible, Spiny and hairy husks surround and extend beyond 4-6 nuts
Bark Morphology:
Exfoliating, Corky
Bark or Stem Colour:
Grey, Orange, Brown
Leaf Bud Type:
Ovoid
Leaf Scar Shape:
Half-round
Organ Modifications:
Ectomycorrhizae
Propagation:
Seed
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant, Drought tolerant)
