Ornamentals

Diseases

• Dahlia: Virus

Insects

• Dahlia: Earwigs
• Dahlia: Western spotted cucumber beetle

Insects

• Daylily: Daylily gall midge
• Daylily: Thrips

Insects

• Gladiolus: Thrips

Diseases

• Iris: Leaf spot

Insects

• Iris: Bulb mite

Diseases

• Narcissus (Daffodil): Basal rot
• Narcissus (Daffodil): Fire
• Narcissus (Daffodil): Leaf scorch
• Narcissus (Daffodil): Stem and bulb nematode
• Narcissus (Daffodil): Virus diseases

Insects

• Narcissus (Daffodil): Narcissus bulb fly

Diseases

• Tulip : Break (viruses)
• Tulip: Fire

Diseases

• Geranium: Bacterial blight
• Geranium: Botrytis leaf spot and blossom blight
• Geranium: Oedema
• Geranium: Rust

Insects

• Geranium: Tobacco budworm

Diseases

• Hollyhock: Rust

Diseases

• Impatiens: Downy mildew

Insects

• Rose: Roseslug
• Petunia: Tobacco budworm

Diseases

• Rose: Black mold
• Rose: Black spot
• Rose: Botrytis bud and twig blight
• Rose: Brand canker
• Rose: Bullheading (cold damage)
• Rose: Common canker
• Rose: Crown gall
• Rose: Downy mildew
• Rose: Powdery mildew
• Rose: Rust
• Rose: Viruses

Insects

• Rose: Leafcutting bees
• Rose: Leafrollers
• Rose: Redhumped caterpillar
• Rose: Root weevils
• Rose: Rose aphids
• Rose: Rose galls
• Rose: Rose leafhopper
• Rose: Rose midge
• Rose: Roseslug
• Rose: Spider mites
• Rose: Thrips
• Rose: Tobacco budworm
• Rose: Western spotted cucumber beetle

Diseases

• Snapdragon: Downy mildew
• Snapdragon: Rust

Diseases

• Arborvitae: Berckmann’s blight
• Arborvitae: Cedar flagging
• Arborvitae: Leaf blight
• Arborvitae: Shoot tip dieback
• Arborvitae: Twig blight

Insects

• Arborvitae: Cypress tip moth
• Arborvitae: Flat-headed and shothole borers
• Arborvitae: Juniper scale
• Arborvitae: Juniper webworm
• Arborvitae: Leafminers
• Arborvitae: Spider mites
• Arborvitae: Spruce bud scale

Diseases

• Cedar: Cedar flagging
• Cedar: Leaf blight
• Cedar: Port Orford cedar root rot
• Cedar: Seiridium canker

Diseases

• Douglas Fir: Armillaria root rot
• Douglas Fir: Laminated root rot
• Douglas Fir: Rhabdocline needle cast
• Douglas Fir: Rust
• Douglas Fir: Stem cankers
• Douglas Fir: Swiss needle cast
• Douglas Fir: Upper stem canker
• Douglas Fir: Yellow-green mottle syndrome

Insects

• Douglas Fir: Aphids
• Douglas Fir: Coneworms
• Douglas Fir: Cooley spruce gall adelgid
• Douglas Fir: Douglas fir needle midge
• Douglas Fir: Douglas fir tussock moth
• Douglas Fir: Douglas fir twig weevil
• Douglas Fir: Sequoia pitch moth
• Douglas Fir: Silverspotted tiger moth
• Douglas Fir: Spruce spider mite

Diseases

• Hemlock: Annosus root rot
• Hemlock: Phytophthora root rot

Insects

• Hemlock: Coneworms
• Hemlock: Hemlock scale
• Hemlock: Hemlock woolly adelgid

Diseases

• Juniper: Dieback
• Juniper: Magnesium deficiency
• Juniper: Pear trellis rust
• Juniper: Phomopsis twig blight
• Juniper: Phytophthora root rot
• Juniper: Rust

Insects

• Spruce: Spruce spider mite
• Juniper: Aphids
• Juniper: Cypress tip moth
• Juniper: Juniper scale
• Juniper: Juniper tip midge
• Juniper: Juniper webworm
• Juniper : Leafminers
• Juniper: Spruce spider mite

Diseases

• Pine: Armillaria root rot
• Pine: Dwarf mistletoe
• Pine: Elytroderma needle cast
• Pine: Lophodermella needle cast
• Pine: Lophodermium needle cast
• Pine: Phytophthora root rot
• Pine: Western gall rust
• Pine: White pine blister rust

Insects

• Pine: Coneworms
• Pine: Eriophyid mites
• Pine: European pine shoot moth
• Pine: Mountain pine beetle
• Pine: Pandora moth
• Pine: Pine aphid
• Pine: Pine bark adelgid
• Pine: Pine butterfly
• Pine: Pine needle scale
• Pine: Pine needle sheathminer (Pine sheath miner)
• Pine: Sequoia pitch moth
• Pine: Spider mites
• Pine: White pine weevil

Diseases

• Spruce: Oil discoloration of foliage
• Spruce: Rhizosphaera needle cast
• Spruce: Rust

Insects

• Spruce: Coneworms
• Spruce: Cooley spruce gall adelgid
• Spruce: Douglas fir tussock moth
• Spruce: Pine needle scale
• Spruce: Spruce aphid
• Spruce: Spruce bud scale
• Spruce: Spruce budworm
• Spruce: Spruce needleminer
• Spruce: White pine weevil

Diseases

• True Cedar (Cedrus): Needle blight

Diseases

• True Fir: Annosus root rot
• True Fir: Armillaria root rot
• True Fir: Current-season needle necrosis
• True Fir: Flowers
• True Fir: Grovesiella canker
• True Fir: Interior needle blight
• True Fir: Needle casts
• True Fir: Phytophthora root rot
• True Fir: Rust (Pucciniastrum)
• True Fir: Rust (Uredinopsis)

Insects

• True Fir: Balsam twig aphid
• True Fir: Balsam woolly adelgid
• True Fir: Coneworms
• True Fir: Giant conifer aphids
• True Fir: Spruce budworm
• True Fir: Spruce spider mite

Insects

• Yew: Cottony camellia scale
• Yew: Lecanium scale
• Yew: Root weevils

Diseases

• Ash: Anthracnose
• Ash: Nectria canker

Insects

• Ash: Aphids
• Ash: Ash borer

Diseases

• Birch: Canker
• Birch: Rust

Insects

• Birch: Aphids
• Birch: Birch leafminer
• Birch: Bronze birch borer
• Birch: Oystershell scale

Diseases

• Crabapple: Powdery mildew
• Crabapple: Scab
• Crabapple: Stem rot

Insects

• Crabapple: Aphids
• Crabapple: Apple-and-thorn skeletonizer
• Crabapple: Leafrollers and leaftiers
• Crabapple: San Jose scale
• Crabapple: Spider mites

Diseases

• Dogwood: Anthracnose
• Dogwood: Armillaria root rot
• Dogwood: Collar rot
• Dogwood: Leaf scorch and leaf roll
• Dogwood: Powdery mildew

Insects

• Dogwood: Brown soft scale
• Dogwood: Lecanium scale
• Dogwood: Oystershell scale

Diseases

• Elm: Bacterial wetwood (Slime flux)
• Elm: Dutch elm disease
• Elm: Nectria canker

Insects

• Elm: Aphids
• Elm: Bark beetles
• Elm: Carpenterworm
• Elm: Elm leaf beetle
• Elm: Elm leafminer
• Elm: European elm scale
• Elm: Spiny elm caterpillar

Diseases

• Hawthorn: Fire blight
• Hawthorn: Leaf spot
• Hawthorn: Rust
• Hawthorn: Scab

Insects

• Hawthorn: Apple-and-thorn skeletonizer
• Hawthorn: Hawthorn aphid
• Hawthorn: Pear slug
• Hawthorn: Scale insects
• Hawthorn: Spider mites

Diseases

• Honey locust: Honeylocust canker
• Honey locust: Powdery mildew

Insects

• Honey locust: Honeylocust pod gall midge
• Honey locust: Locust borer

Diseases

• Horsechestnut: Leaf scorch

Diseases

• Laurel: Physiological shothole

Insects

• Laurel: Carnation tortrix

Diseases

• Linden(Tilia): Leaf scorch (marginal leaf necrosis)

Insects

• Linden(Tilia): Leaf galls
• Linden(Tilia): Linden aphid

Diseases

• Madrone: Collar rot (Phytophthora)
• Madrone: Leaf blight
• Madrone: Leaf gall
• Madrone: Leaf spot
• Madrone: Madrone canker

Insects

• Madrone: Madrone leafminer
• Madrone: Shield bearer

Diseases

• Maple: Anthracnose
• Maple: Bacterial leaf spot and dieback
• Maple: Fasciation
• Maple: Leaf scorch
• Maple: Nectria canker
• Maple: Phyllosticta leaf spot
• Maple: Powdery mildew
• Maple: Tar spots
• Maple: Verticillium wilt

Insects

• Maple: Aphids
• Maple: Cottony maple scale
• Maple: Maple bladdergall mite

Diseases

• Mountain Ash: Fire blight
• Mountain Ash: Nectria canker

Insects

• Mountain Ash: Aphids
• Mountain Ash: Ash borer
• Mountain Ash: Leaf blister mite
• Mountain Ash: Mountain ash sawfly

Diseases

• Oak: Anthracnose
• Oak: Armillaria root rot
• Oak: Leaf scorch
• Oak: Mistletoe
• Oak: Sudden oak death

Insects

• Oak: California gallfly
• Oak: Jumping oak gall
• Oak: Leaf galls
• Oak: Oak leaf phylloxera
• Oak: Oak ribbed casemaker
• Oak: Oak treehoppers
• Oak: Pit scale
• Oak: Stem galls
• Oak: Western oak looper

Diseases

• Ornamental Cherry: Armillaria root rot
• Ornamental Cherry: Bacterial canker
• Ornamental Cherry: Brown rot
• Ornamental Cherry: Coryneum blight (Shothole)
• Ornamental Cherry: Leaf spot
• Ornamental Cherry: Virus diseases

Insects

• Ornamental Cherry: Aphids
• Ornamental Cherry: Apple-and-thorn skeletonizer
• Ornamental Cherry: Cherry bark tortrix
• Ornamental Cherry: Pear slug
• Ornamental Cherry: Redhumped caterpillar
• Ornamental Cherry: Scales
• Ornamental Cherry: Shothole borer
• Ornamental Cherry: Spider mites
• Ornamental Cherry: Tent caterpillars

Diseases

• Ornamental Pear: Fire blight
• Ornamental Pear: Pear trellis rust
• Ornamental Pear: Powdery mildew
• Ornamental Pear: Pseudomonas blossom blast and dieback

Insects

• Ornamental Pear: Aphids
• Ornamental Pear: Codling moth
• Ornamental Pear: Pear slug (pear sawfly)
• Ornamental Pear: Pearleaf blister mite

Diseases

• Ornamental Plum: Armillaria root rot
• Ornamental Plum: Brown rot
• Ornamental Plum: Crown gall
• Ornamental Plum: Cytospora canker
• Ornamental Plum: Plum pockets
• Ornamental Plum: Shothole (Coryneum blight)
• Ornamental Plum: Silver leaf
• Ornamental Plum: Viruses

Insects

• Ornamental Plum: Hop aphid
• Ornamental Plum: Leaf curl plum aphid
• Ornamental Plum: Peachtree borer
• Ornamental Plum: Pear slug
• Ornamental Plum: Scales

Diseases

• Poplar: Bacterial blight
• Poplar: Canker
• Poplar: Leaf and shoot blight
• Poplar: Leaf blister
• Poplar: Leaf rust
• Poplar: Marssonina leaf spot

Insects

• Poplar: Carpenterworm
• Poplar: Oystershell scale
• Poplar: Poplar petiole gall aphids
• Poplar: Poplar-and-willow borer
• Poplar: Satin moth
• Poplar: Tent caterpillars

Diseases

• Sycamore: Sycamore anthracnose

Insects

• Sycamore: Aphids

Diseases

• Willow: Bacterial twig blight
• Willow: Marssonina leaf and twig spot
• Willow: Rust
• Willow: Twig blight (Venturia)

Insects

• Willow: Carpenterworm
• Willow: Poplar and willow borer
• Willow: Satin moth
• Willow: Spiny elm caterpillar

Diseases

• Azalea: Cylindrocladium blight & root rot
• Azalea: Botrytis petal blight
• Azalea: Leaf and flower gall
• Azalea: Leaf spot
• Azalea: Lime-induced chlorosis
• Azalea: Marginal leaf necrosis
• Azalea: Nematode (stunt)
• Azalea: Ovulinia petal blight
• Azalea: Powdery mildew
• Azalea: Root rot (Phytophthora)

Insects

• Azalea: Azalea bark scale
• Azalea: Azalea lace bug
• Azalea: Azalea leafminer
• Azalea: Obliquebanded leafroller
• Azalea: Root weevils
• Azalea: Spider mites

Insects

• Bamboo: Aphids
• Bamboo: Bamboo spider mite

Diseases

• Boxwood: Box blight
• Boxwood: Canker
• Boxwood: Leaf spot
• Boxwood: Phytophthora root rot

Insects

• Boxwood: Boxwood leafminer
• Boxwood: Boxwood mite
• Boxwood: Boxwood psyllid

Diseases

• Camellia: Cold injury
• Camellia: Flower and petal blight
• Camellia: Leaf gall
• Camellia: Oedema
• Camellia: Ramorum leaf and shoot blight (Sudden oak death)
• Camellia: Sooty mold (Black mold)
• Camellia: Sunburn
• Camellia: Virus

Insects

• Camellia: Aphids
• Camellia: Brown soft scale
• Camellia: Cottony camellia scale
• Camellia: Root weevils

Diseases

• Cotoneaster: Bacterial blight
• Cotoneaster: Fire blight
• Cotoneaster: Scab

Insects

• Cotoneaster: Cotoneaster webworm
• Cotoneaster: Spider mites

Diseases

• Euonymus: Bacterial blight
• Euonymus: Crown gall
• Euonymus: Powdery mildew

Insects

• Euonymus: Euonymus scale

Diseases

• Fuchsia: Black root rot
• Fuchsia: Rust

Insects

• Fuchsia: Fuchsia gall mite

Diseases

• Holly: Boron deficiency
• Holly: Green algae
• Holly: Phytophthora leaf & twig blight
• Holly: Red leaf spotting

Insects

• Holly: Brown soft scale
• Holly: Cottony camellia scale
• Holly: Holly bud moth
• Holly: Holly leafminer
• Holly: Lecanium scale
• Holly: Orange tortrix

Diseases

• Hydrangea: Failure to bloom
• Hydrangea: Fungal leaf spots
• Hydrangea: Hail damage
• Hydrangea: Herbicide damage
• Hydrangea: Leaf scorch
• Hydrangea: Marginal leaf necrosis
• Hydrangea: Powdery mildew

Diseases

• Hypericum: Rust

Diseases

• Kinnikinnick: Leaf gall
• Kinnikinnick: Leaf spot
• Kinnikinnick: Rust

Insects

• Kinnikinnick: Aphid (Manzanita leafgall aphid)

Diseases

• Lilac: Bacterial blight
• Lilac: Powdery mildew

Insects

• Lilac: Lilac borer
• Lilac: Lilac leafminer
• Lilac: Oystershell scale

Diseases

• Photinia: Leaf spot (Diplocarpon)
• Photinia: Physiological leaf spot
• Photinia: Powdery mildew

Insects

• Photinia: Aphids
• Photinia: Root weevils

Diseases

• Pieris (Andromeda): Leaf spot
• Pieris (Andromeda): Ramorum leaf and shoot blight (Sudden oak death)
• Pieris (Andromeda): Root rot & dieback

Insects

• Pieris (Andromeda): Black vine weevil

Diseases

• Pyracantha: Scab

Diseases

• Rhododendron: Armillaria root rot
• Rhododendron: Botrytis shoot blight
• Rhododendron: Gray blight
• Rhododendron: Leaf spot
• Rhododendron: Lime-induced chlorosis
• Rhododendron: Marginal leaf necrosis
• Rhododendron: Physiological leaf spot
• Rhododendron: Phytophthora blight
• Rhododendron: Phytophthora root rot
• Rhododendron: Powdery mildew
• Rhododendron: Ramorum leaf and shoot blight (Sudden oak death)
• Rhododendron: Rust
• Rhododendron: Salt injury
• Rhododendron: Sunburn
• Rhododendron: Tissue proliferation

Insects

• Rhododendron: Aphids
• Rhododendron: Azalea bark scale
• Rhododendron: Caterpillars
• Rhododendron: Lecanium scale
• Rhododendron: Rhododendron lace bug
• Rhododendron: Rhododendron whitefly
• Rhododendron: Root weevils

Insects

• Skimmia: Spider mites

Diseases

• Viburnum: Bacterial blight (Leaf spot)
• Viburnum: Leaf spot
• Viburnum: Powdery mildew
• Viburnum: Ramorum leaf and shoot blight (Sudden oak death)
• Viburnum: Shoot blight (Gray mold)

Insects

• Viburnum: Bean aphids
• Viburnum: Root weevils
• Viburnum: Viburnum leaf beetle