Pests & Diseases

Check back often to get info on pests, diseases and other issues affecting trees in the Calgary area.

Insects

• Ash Leaf Roller
• Ash Bark Beetle
• Aphids
• Birch Leafminer
• Cottony Ash Psyllid
• Eriophyid Mites
• European Elm Scale
• Oystershell Scale
• Pine Needle Scale
• Poplar Budgall Mite
• White Pine Weevil
• Yellow Headed Spruce Sawfly

Diseases

• Black Knot Fungus
• Bronze Leaf Disease
• Fire Blight

Other Tree Issues and Resources

• Damage Caused by Animals
• Herbicide Damage
• Seasonal Needle Drop of Evergreens
• Tree Planting Article.