Common Filbert
Corylus avellana
Betulaceae · deciduous shrub · introduced
Quick Facts
Height
15 ft
Spread
9 ft
Growth Rate
Moderate
Light
Sun to Part Shade
Soil
Well Drained
Water
Moderate
Hardiness
Zone Zones 4a–8b
Bloom Time
February to March
Origin
Europe, Western Asia
Diseases (20)
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
Omnivorous leaftier
Pests (8)
Cultivars (4)
Contorta
Common name: Contorted Filbert Contorted Hazelnut Harry Lauder's Walking Stick; Mature height: 8–10 ft
Red Dragon
Common name: Red Dragon Hazelnut
Red Majestic
Common name: Red Majestic HazelnutRed Majestic Filbert
Rote Zeller
Common name: Rote Zeller Hazelnut