Plant identification

Oaks are deciduous or evergreen trees with acorns.

Optimum conditions for growth

Oaks grow in various climatic zones and do well in full sun.

Pests and Disorders

Invertebrates

Aphids
Bark Beetles
Blister, Bud, Erineum, Gall, and Rust Mites
California Oakworm
Carpenterworm
Clearwing Moths
Filbert Weevils and Filbertworm
Flatheaded Borers
Foliage Miners
Foliage-feeding Caterpillars (Trees and Shrubs)
Fuller Rose Beetle
Gall Makers
Glassy-winged Sharpshooter
Leafrollers on Ornamental and Fruit Trees
Longhorned Beetles, or Roundheaded Wood Borers
Mealybugs (Invertebrates)
Nematodes
Oak Leaf Phylloxera
Oak Pit Scales
Scales
Spider Mites
Treehoppers
Whiteflies
Woolly Aphids

Plant Diseases

Anthracnose
Armillaria Root Rot
Canker Diseases
Drippy Acorn Disease
Foamy Canker, or Alcoholic Flux
Oak Branch Canker and Dieback
Oak Twig Blight
Phytophthora Root and Crown Rot (Diseases)
Powdery Mildew on Ornamentals
Rusts (Trees and Shrubs)
Sudden Oak Death
Taphrina Leaf Curl
Wetwood, or Slime Flux
Wood Decay Fungi in Landscape Trees

Environmental Disorders

Leaf Burn or Scorch
Leaf Scorch
Nutrient and Mineral Excesses, Salinity, and Salt Toxicity
Nutrient Deficiencies
Sunburn
Water Deficit and Excess

Parasitic Plants

Mistletoes

Weeds and Other Unwanted Plants

Weed Management Around Ornamental Trees and Shrubs
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