Turkish Hazel
Corylus colurna
Betulaceae · broadleaf · introduced
Quick Facts
Height
35-50 ft
Spread
23 ft
Growth Rate
Medium
Light
Sun to Part Shade
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 4a–8b
Bloom Time
March
Fall Color
Yellow
Origin
southeast Europe and western Asia
Diseases (19)
Armillaria ostoyae Armillaria Root Rot
Pseudomonas syringae pv. syringae Bacterial Blight
Blanks
Brown Stain
Cytospora spp. (synonyms: Leucostoma, Valsa) Canker
Catkin Blast
Decline/Collapse Syndrome
Eastern Filbert Blight
Kernel Molds
Various fungi (Phyllosticta spp., Septoria spp., Cercospo... Leaf Spot
Mosaic
Mosses and Lichens
Podosphaera aphanis var. aphanis Powdery Mildew
Fumago vagans Sooty Mold
Stunt (Dilly)
Non-pathogenic (abiotic — solar radiation damage) Sunburn
Wet Feet
Taphrina wiesneri Witches' Broom
Limb and Wood Decay