Ministry of Agriculture and Land
Ornamental Pest and Disease Factsheets
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Diseases
- Abnormalities (Crown Gall, Root Gall, Blisters) (PDF, 581KB)
- Anthracnose (Leaf Blights, Twig Cankers) (PDF, 260KB)
- Blight (PDF, 219KB)
- Botrytis cinerea (Grey Mould) (PDF, 437KB)
- Canker & Stem Rot (PDF, 510KB)
- Damping-Off (Pythium, Rhizoctonia, and others) (PDF, 229KB)
- Downy Mildew (PDF, 267KB)
- Leaf and Flower Spots (PDF, 1643KB)
- Nematodes (PDF, 270KB)
- Pelargonium - Xanthomonas (Bacterial Blight of Geranium) (PDF, 143KB)
- Powdery Mildew (PDF, 646KB)
- Root Rot (PDF, 1648KB)
- Rust (PDF, 1259KB)
- Virus: Impatiens Necrotic Spot Virus (INSV) &
Tomato Spotted Wilt Virus (TSWV), Other Viruses (PDF, 1236KB) - Wilt (PDF, 498KB)
Insects
- Adelgids (PDF, 201KB)
- Aphids (PDF, 414KB)
- Apple Ermine Moth (PDF, 89KB)
- Bark Beetle - Red Cedar (PDF, 152KB)
- Boxwood Psyllid (PDF, 140KB)
- Boxelder Bug (PDF, 82KB)
- Bruce Spanworm & Winter Moth (PDF, 135KB)
- Bud Moth (PDF, 82KB)
- Bulb Flies (PDF, 86KB)
- Bulb Mites (PDF, 175KB)
- Caterpillars (PDF, 475KB)
- Cherry Bark Tortrix (PDF, 143KB)
- Cranberry Girdler (PDF, 152KB)
- Cypress Tip Moth (PDF, 263KB)
- European Pine Shoot Moth (PDF, 139KB)
- Fungus Gnats & Shoreflies (PDF, 173KB)
- Honeylocust Pod Gall Midge (PDF, 95KB)
- June Beetles (PDF, 102KB)
- Lace Bugs (PDF, 113KB)
- Leafhoppers (PDF, 196KB)
- Leafminers (PDF, 453KB)
- Leatherjacket (PDF, 132KB)
- Lygus Bug (PDF, 137KB)
- Mealybugs (PDF, 158KB)
- Mites (PDF, 697KB)
- Orange Tortrix (PDF, 171KB)
- Pear Psylla (PDF, 103KB)
- Poplar & Willow Borer (PDF, 167KB)
- Satin Moth (PDF, 154KB)
- Sawfly "Pear Slug" (PDF, 177KB)
- Scales (PDF, 535KB)
- Slugs & Snails (PDF, 105KB)
- Sowbugs (PDF, 114KB)
- Springtails (PDF, 166KB)
- Spruce Budworm (PDF, 182KB)
- Thrips (PDF, 501KB)
- Tussock Moth (PDF, 234KB)
- Webworms (PDF, 323KB)
- Weevils (PDF, 418KB)
- Whiteflies (PDF, 277KB)
- Wireworms (PDF, 101KB)
Physiological Disorders
- Abies - True Fir (Current Season Necrosis) (PDF, 105KB)
- Acer - Leaf Scorch (Xylella) (PDF, 130KB)
- Euphorbia pulcherrima - Poinsettia (Bract Edge Burn, Broken Branches, Cycocel Burn) (PDF, 180KB)
- Ilex (Green Algae) (PDF, 138KB)
- Pelargonium - Geranium (Oedema) (PDF, 89KB)
- Saintpaulia - African Violet (Cold Water Injury) (PDF, 100KB)
- Thuja - Winter Injury (PDF, 99KB)
