Ornamental Pest and Disease Factsheets

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• Diseases
• Insects
• Physiological Disorders

Diseases

• Abnormalities (Crown Gall, Root Gall, Blisters)
• Anthracnose (Leaf Blights, Twig Cankers)
• Blight
• Botrytis cinerea (Grey Mould)
• Canker & Stem Rot
• Damping-Off (Pythium, Rhizoctonia, and others)
• Downy Mildew 
• Leaf and Flower Spots
• Nematodes
• Pelargonium - Xanthomonas (Bacterial Blight of Geranium)
• Powdery Mildew
• Root Rot
• Rust
• Virus: Impatiens Necrotic Spot Virus (INSV) &
  Tomato Spotted Wilt Virus (TSWV), Other Viruses
• Wilt

Insects

• Adelgids
• Aphids
• Apple Ermine Moth
• Bark Beetle - Red Cedar
• Boxwood Psyllid
• Boxelder Bug
• Bruce Spanworm & Winter Moth
• Bud Moth
• Bulb Flies
• Bulb Mites
• Caterpillars
• Cherry Bark Tortrix
• Cranberry Girdler
• Cypress Tip Moth
• European Pine Shoot Moth
• Fungus Gnats & Shoreflies
• Honeylocust Pod Gall Midge
• June Beetles
• Lace Bugs
• Leafhoppers
• Leafminers
• Leatherjacket
• Lygus Bug
• Mealybugs
• Mites
• Orange Tortrix
• Pear Psylla
• Poplar & Willow Borer
• Satin Moth
• Sawfly "Pear Slug"
• Scales
• Slugs & Snails
• Sowbugs
• Springtails
• Spruce Budworm
• Thrips
• Tussock Moth
• Webworms
• Weevils
• Whiteflies
• Wireworms

Physiological Disorders

• Abies - True Fir (Current Season Necrosis)
• Acer - Leaf Scorch (Xylella)
• Euphorbia pulcherrima - Poinsettia (Bract Edge Burn, Broken Branches, Cycocel Burn)
• Ilex (Green Algae)
• Pelargonium - Geranium (Oedema)
• Saintpaulia - African Violet (Cold Water Injury)
• Thuja - Winter Injury