Common Problems

• Common Cultural: Air pollution
• Common Cultural: Chlorosis
• Common Cultural: Construction damage
• Common Cultural: Desiccating wind
• Common Cultural: Drought damage
• Common Cultural: Fasciation
• Common Cultural: Fertilizer burn
• Common Cultural: Frost injury
• Common Cultural: Hail damage
• Common Cultural: Lime-induced chlorosis
• Common Cultural: Marginal leaf necrosis
• Common Cultural: Morphological changes
• Common Cultural: Mosses and lichens
• Common Cultural: Needle loss
• Common Cultural: Needle tip necrosis
• Common Cultural: Nutrient deficiency
• Common Cultural: Oedema
• Common Cultural: Overwatering or poor drainage
• Common Cultural: Plant girdling and circling roots
• Common Cultural: Poor pollination
• Common Cultural: Salt damage
• Common Cultural: Sunscald
• Common Cultural: Transplant shock
• Common Cultural: Winter desiccation
• Common Cultural: Winter injury
• Air pollution

• Common Diseases: Armillaria root rot
• Common Diseases: Botrytis blight (Gray mold)
• Common Diseases: Cankers
• Common Diseases: Crown gall
• Common Diseases: Damping-off
• Common Diseases: Dead roots
• Common Diseases: Dodder
• Common Diseases: Downy mildew
• Common Diseases: Dwarf mistletoe
• Common Diseases: Galls
• Common Diseases: Leaf spots and blights
• Common Diseases: Nectria cankers
• Common Diseases: Phytophthora root rot
• Common Diseases: Powdery mildew
• Common Diseases: Pseudomonas bacterial canker
• Common Diseases: Root rots
• Common Diseases: Rusts
• Common Diseases: Sclerotinia white mold
• Common Diseases: Sudden oak death
• Common Diseases: Tubercularia canker
• Common Diseases: Verticillium wilt
• Common Diseases: Viruses

• Common Insects and Mites: Aphids
• Common Insects and Mites: Asian lady beetle
• Common Insects and Mites: Bark beetles
• Common Insects and Mites: Brown marmorated stink bug
• Common Insects and Mites: Brown soft scale
• Common Insects and Mites: California gallfly
• Common Insects and Mites: Conifer aphids
• Common Insects and Mites: Cottony camellia scale
• Common Insects and Mites: Cutworms and loopers
• Common Insects and Mites: Earwigs
• Common Insects and Mites: Eriophyid mites
• Common Insects and Mites: Exotic longhorned beetles
• Common Insects and Mites: Fall webworm
• Common Insects and Mites: Inchworms
• Common Insects and Mites: Leafhoppers
• Common Insects and Mites: Leafminers
• Common Insects and Mites: Leafrollers
• Common Insects and Mites: Lecanium scale
• Common Insects and Mites: Oystershell scale
• Common Insects and Mites: Pamphilid sawflies
• Common Insects and Mites: Pear slug
• Common Insects and Mites: Root weevils
• Common Insects and Mites: Sapsucker damage
• Common Insects and Mites: Shothole borer
• Common Insects and Mites: Skeletonizers
• Common Insects and Mites: Slugs
• Common Insects and Mites: Sowbugs, pillbugs, and millipedes
• Common Insects and Mites: Spider mites
• Common Insects and Mites: Spotted wing Drosophila (SWD)
• Common Insects and Mites: Tent caterpillars

• Herbicide Damage: 2,4-D and triclopyr
• Herbicide Damage: Dicamba
• Herbicide Damage: Dichlobenil (Casoron)
• Herbicide Damage: Fluazifop
• Herbicide Damage: Glyphosate and sulfonylureas
• Herbicide Damage: Horticultural spray oil
• Herbicide Damage: Long-term residual herbicides
• Herbicide Damage: Triazines (atrazine, simazine and others)