All Pests
17-Year Periodical Cicadas
Affected Plants: maple, hickory, hawthorn, apple, peach, cherry, and pear.
Read More (pdf)
Algae and Moss
Affected plants: Lawn and turf
Ants
Affected Plants: decaying wood
Read More (pdf)
Anthracnose of Sycamore and other Shade Trees
Affected Plants: Sycamore, Maple, Ash, Elm, Oak and Walnut.
Anthracnose of Turf
Affected plants: Creeping bentgrass, annual bluegrass, Kentucky bluegrass, and tall fescue
Anthracnose of Watermelon, Cucumber, Muskmelon
Affected plants: Watermelon, cucumber, and muskmelon
Aphids
Affected Plants: most plants
Read More (pdf)
Apple and Crabapple Powdery Mildew
Affected Plants: Apple, flowering crabapple
Apple Pest Control
Affected Plants: Apple
Apple Russeting
Affected Plants: Apple and pear
Apple Scab
Affected Plants: Apple, flowering crabapple
Apple and Pear, Sooty Blotch and Fly Speck
Affected Plants: Apples, pears and various wild hosts.
Arborvitae Fall Needle Drop
Affected Plants: Arborvitae
Arborvitae, Seiridium Canker
Affected Plants: Oriental Arborvitae
Armyworms and Cutworms
Affected Plants: numerous
Read More (pdf)
Fall Armyworms
Affected Plants: mainly grasses
Read More (pdf)
Ash/Lilac Borer
Affected Plants: Lilac, ash, mountain ash, and occasionally privet
Ash, Emerald Ash Borer
Affected Plants: Ash
Ash Flower Gall Mite
Affected Plants: Ash
Ash, Mycosphaerella Leaf Spot
Affected Plants: Ash, walnut
Ash Plant Bug
Affected Plants: Ash
Ash Rust
Affected Plants: Ash and cordgrass
Asian Jumping Worms
Affected plants: Lawn, turf, soil
Asparagus Beetle
Affected plants: Asparagus
Ash Sawfly
Affected Plants: Green Ash, other ash
Aster Yellows
Affected Plants: numerous
Read More (pdf)
Bacterial Spot on Fruit Trees
Affected Plants: Peach and nectarine and, to a lesser extent, apricot and plum
Bacterial Wilt of Vine Crops
Affected plants: Cucumber, muskmelon, squash, pumpkin, and gourd
Bagworms
Affected Plants: Junipers, arborvitae
Bark Shedding
Affected Plants: Sycamore, London planetree, eastern redbud, silver maple
Bean Leaf Beetle
Affected plants: Beans, peas, cowpeas, soybeans, and corn
Bermudagrass Spring Dead Spot
Affected plants: Bermudagrass
Blackberries and Raspberries, Tan Drupelets
Affected plants: Blackberry and raspberry
Black Knot
Affected Plants: Cherries, plums, peaches, apricots
Black Rot on Grapes
Affected plants: Grapes
Bleeding Cankers on Shade Trees
Affected Plants: Pin oaks, willows, cottonwoods, and honeylocust
Blister Beetles
Affected plants: Tomatoes, beans, peas, potatoes, and other vegetables
Blossom-End Rot
Affected plants: Tomato, Pepper, Squash, Eggplant and Watermelon
Blueberries, Iron Chlorosis
Affected plants: Blueberries
Bluegrass and Zoysia Billbugs
Affected plants: Primarily Zoysiagrass and Kentucky Bluegrass
Borers in Trees
Affected Plants: numerous trees
Brown Rot of Fruit Trees
Affected Plants: Peach, Nectarines, Apricots, Plums, Cherries, Apples
Brown Patch of Turf
Affected plants: many turfgrasses but most severe on tall fescue, perennial ryegrass and creeping bentgrass
Botryosphaeria Canker of Juniper
Affected Plants: Juniper
Botryosphaeria Canker of Oak
Affected Plants: Oak
Boxelder Bug
Affected Plants: Boxelder, maple, ash
Bronze Birch Borer
Affected Plants: Paper birch, yellow birch, gray birch, poplar, cottonwood and willow
Budworms
Affected plants: Petunia, Geranium, Roses, Tobacco
Burning Bush Spider Mites
Affected plants: Burning bush
Cabbage Looper
Affected plants: Cabbage, broccoli and cauliflower
Cabbageworm
Affected plants: Cabbage, Broccoli, Cauliflower
Cankerworm
Affected Plants: Elm, hackberry, honeylocust
Carpenter Bees
Affected Plants: untreated wood
Cedar-Apple and Related Rusts
Affected Plants: Apple, flowering crabapple, juniper, cedar.
Affected Plants: untreated wood
Cedar-Apple Rust Control on Fruiting Apples
Affected Plants: Apple, flowering crabapple, juniper, cedar.
Cherry Leaf Spot
Affected Plants: Sour cherry, almond, dwarf Russian almond; bitter, black, Japanese flowering, mahalen, pin, sand, and sweet cherries; chokecherry; cherry laurel; and Canada, common, Japanese, and wild plums.
Chiggers
Affected: Humans and other animals
Chinch Bug
Affected plants: Primarily zoysiagrass but may infest buffalograss, bermudagrass, and bluegrass.
Clover
Affected plants: White clover, lawn, turf, weeds
Cicada Killer
Affected Plants: none, affects cicadas primarily
Codling Moth on Apple Trees
Affected Plants: Primarily apples but may also attack pears, crabapples, walnuts, quince and other fruits.
Colorado Potato Beetle
Affected plants: Potato, tomato, eggplant, pepper, tobacco, and other solanaceous
Corn Earworm
Affected plants: Sweet corn
Corn, Poorly Filled Ears
Affected plants: Sweet Corn
Corn Smut
Affected plants: Corn
Cottonwood Borer
Affected Plants: Cottonwood, willow, poplar
Crabgrass
Affected plants: Crabgrass, lawn, turf, weeds
Cucumber Beetle
Affected plants: Cucumber, cantaloupe, squash, pumpkin, gourd, and watermelon. May also affec beans, corn, and potatoes
Cucumber Bitterness
Affected plants: Cucumber
Dandelion
Affected plants: Lawn, turf, weeds
Dodder
Affected Plants: numerous
Diplodia Tip Blight of Pine
Affected Plants: Austrian pine, ponderosa pine, Scots pine and mugo pine
Dollar Spot on Turf
Affected plants: All common turfgrass, lawn
Dothistroma Needle Blight of Pine
Affected Plants: Austrian, ponderosa, and mugo pines
Dutch Elm Disease
Affected Plants: American elm, red or slippery elm, rock elm and cedar elm
Earthworms in the Lawn
Affected plants: Turf, lawn, soil
Eastern Tent Caterpillar
Affected Plants: Wild Cherry, various ornamental shrubs, shade, and forest trees.
Elm Flea Weevil
Affected Plants: Elm
Elm Leaf Beetle
Affected Plants: Elms
Elm Pocket Gall
Affected Plants: American elm
Woolly Elm Aphid
Affected Plants: Elm
Environmental Stress on Trees
Affected Plants:
Euonymus Scale
Affected Plants: Euonymus, camellia, boxwood, bittersweet, daphne, eugenia, English ivy, hibiscus, holly jasmine, privet, honeysuckle, olive, pachysandra and stone fruits
European Pine Sawfly
Affected Plants: Primarily Scots and Mugho Pines
Fall Webworm
Affected Plants: almost all fruit, shade, and ornamental trees
Fireblight on Trees
Affected Plants: Apple, flowering crabapple, pear, ornamental pear, firethorn, hawthorn, cotoneaster, quince, mountain ash.
Flatid Planthopper
Affected Plants: numerous
Flea Beetle
Affected plants: Watermelons, pumpkins, peas, beans, eggplants, sweet potatoes, beets, spinach, strawberries and potatoes
Flooding and Plants
Affected Plants: all
Freeze and Frost
Damage in Spring
Affected Plants: numerous
Frost Cracks on Trees
Affected Plants: Fruit trees, maples, lindens, willows and other thin-barked trees
Galls of Trees
Affected Plants: Oaks, trees, shrubs
Girdling Roots
Affected Plants: Maples, numerous others
Grapes, Downy Mildew
Affected plants: Grapes
Grasshoppers
Affected plants: All
Grassy Sandbur/Stickers
Affected plants: Lawn, turf
Gray Leaf Spot on Perennial Ryegrass
Affected plants: Perennial Ryegrass
Green June Beetles
Affected Plants: Apricots, nectarines, peaches, plums, prunes, apples, pears, grapes, figs, blackberries, and raspberries
Grubs, White
Affected plants: Bentgrass, Kentucky bluegrass, and the fine fescues.
Gummosis of Fruit Trees
Affected Plants: Cherry, peach, plum, apricot
Hackberry, Island Chlorosis
Affected Plants: Hackberry
Hackberry Nipple Gall Maker
Affected Plants: Hackberry
Harlequin Bug
Affected plants: Cabbage, collards, horseradish, mustards, and turnips. May also feed on potatoes, tomatoes, and okra
Hawthorn Rust Diseases
Affected Plants: Hawthorn
Henbit and Chickweed
Affected Plants: any, considered weed
Herbicide Damage on Garden Plants
Affected plants: All plants affected but tomato, potato, grape, and redbud very sensitive
Honeylocust, Plant Bug/Leafhopper Complex
Affected Plants: Honeylocust
Hollyhock Rust
Affected plants: Hollyhock, Rose Mallow, Rose-of-Sharon
Hollyhock Weevil
Affected plants: Hollyhock
Honeysuckle Aphid
Affected plants: Honeysuckle
Impatiens Downy Mildew
Affected Plants: Various Impatiens
Iris Bacterial Soft Rot
Affected plants: Iris
Iris Borer
Affected plants: Iris
Iris Leaf Spot
Affected plants: Iris
Iris Weed Control
Affected plants: Iris
Iron Chlorosis of Herbaceous Plants
Affected plants: Strawberries, Blueberries, Annual Flowers, Vegetables
Iron Chlorosis of Trees
Affected Plants: Pin oak, silver maple, bald cypress, crabapple and sweet gum; white pine, elm, London planetree, cottonwood, walnut, sugar maple, Eastern red cedar, Bradford pear and willow
Japanese Beetle
Affected Plants: numerous, including rose, birch, linden, crabapple, grape, Virginia creeper, and buckeye
Juniper, Cercospora Needle Blight
Affected Plants:
Juniper, Kabatina Tip Blight
Affected Plants: Upright and spreader juniper species
Juniper, Phomopsis Tip Blight
Affected Plants: Upright and Spreader juniper
Juniper Root Diseases
Affected Plants: Upright and spreader juniper species
Juniper Webworm
Affected Plants: Juniper
Kermes Oak Scale
Affected Plants: Primarily pin and bur oaks
Lace Bug
Affected Plants: Cotoneaster, sycamore, ash, hickory, oak, hawthorn and mulberry
Lady Bug Asian
Main impacts: aphid infestations and overwintering in buildings
Leaf Drop in Spring
Affected Plants:
Leaf Spot and Melting-out
Affected plants: Primarily Kentucky bluegrass and tall fescue
Leaves That Don't Drop in the Fall
Affected Plants: Wide Variety of Woody Plants
Lecanium Scales
Affected Plants: Numerous shade trees and woody ornamentals
Little Barley
Affected plants: Lawn, turf, weeds
Maple Bladdergall Mite
Affected Plants: Maples
Mapleworm
Affected Plants: Maples, boxelder, oak
Magnolia Scale
Affected Plants: Saucer and Star magnolia
Mimosa Webworm
Affected Plants: Mimosa, honeylocust
Minute Pirate Bug
Affected Plants: numerous
Lilac, Powdery Mildew
Affected plants: Lilac
Lilac Leaf Spot
Affected Plants: Lilac
Mite, Two-Spotted
Affected Plants: numerous
Moles
Affected plants: Lawn, turf, soil
Mosaic Virus of Vegetable Plants
Affected plants: Tomato, pepper, cucumber, melons, squash, spinach, celery, beets, and petunia
Mosquitos
Main impacts: humans
Mushrooms in a Lawn
Affected plants: Turgrass, lawn
Nantucket Pine Tip Moth
Affected Plants: Ponderosa, Scotch, Austrian and Mugo pine.
Natural Needle Drop
Affected Plants: Pines, arborvitae, spruce
Nematodes
Affected Plants: numerous
Oak Gall Midge
Affected Plants: Pin oak
Oak, Hypoxylon Canker
Affected Plants: Oaks, maples, pecans, hickory, elms and other species
Oak, Jumping Oak Gall
Affected Plants: White oaks
Oak Lace Bug
Affected Plants: Oak, cotoneaster, sycamore, ash, hickory, hawthorn and mulberry
Oak, Obscure Scale
Affected Plants: Oaks, pecan
Oak, Scarlet Oak Sawfly
Affected Plants: Scarlet, black, pin, and white oaks
Oak, Tubakia Leaf Spot
Affected Plants: Primarily oaks but also maple, hickory, chestnut, redbud, ash, tupelo, sourwood, rose, sassafras & elm.
Oak Wilt
Affected Plants: Red oaks, shingle oak, post oak
Oak, Vein Pocket Gall
Affected Plants: Scrub and Pin oak
Orchard Grass
Affected plants: Lawn, turf, weeds
Oxalis (Yellow Woodsorrel)
Main impact: perennial weed in lawn
Peach, Perennial Canker
Affected Plants: Peach, apricot, plum, nectarine and sweet cherry
Peach Leaf Curl
Affected Plants: Peach, plum
Peachtree Borer
Affected Plants: Peaches, plums, cherries, nectarines and apricots
Pear Leaf Rust
Affected Plants: Pear, Hawthorn
Peony Measles
Affected plants: Peony
Peony, Powdery Mildew
Affected plants: Peony
Pitburn and Split Pit of Stone Fruits
Affected Plants: Primarily peaches, nectarines and apricots
Pseudomonas Blight
Affected Plants: Lilac and ornamental flowering pears
Pine, Brown Spot
Affected Plants: Scots, ponderosa
Pine Needle Scale
Affected Plants: Pine, spruce, fir, hemlock, and, occasionally, yew and cedar
Pine Tortoise Scale
Affected Plants: Pine trees including Scots, Austrian and red
Pine Wilt
Affected Plants: Scots, Austrian, and white pine
Oxalis (Yellow Woodsorrel)
Main impact: perennial weed in lawn
Roly-Polys, Pillbugs, & Sowbugs
Affected Plants: numerous young seedlings
Plum Curculio
Affected Plants: Plums, apples, cherries, peaches and other stone fruits.
Poison Ivy
Main impact: rash in humans
Pollination Problems
Affected Plants: numerous
Potato Tuber, Corky Bumps
Affected plants: Potato
Potato, Green Tubers
Affected plants: Potato
Potato, Growth Cracks
Affected plants: Potato
Potato, Internal Darkening
Affected plants: Potato
Potato, Secondary Growth
Affected plants: Potato
Powdery Mildew of Cucurbits
Affected plants: Cucumber, muskmelon, squash, watermelon, pumpkin
Powdery Mildew on Turf
Affected plants: Kentucky bluegrass (most susceptible), bermudagrass, red fescue, others
Rhubarb Crown Rot
Affected plants: Rhubarb
Rhubarb Seedstalks
Affected plants: Rhubarb
Rose Blackspot
Affected plants: Rose
Rose Mosaic Virus
Affected plants: Rose
Rose Rosette
Affected plants: Rose
Rose Slug
Affected plants: Rose
Russian Olive, Phomopsis Canker
Affected Plants: Russian Olive
Rust on Turfgrass
Affected plants: All common turfgrasses
San Jose Scale
Affected Plants: Apple, peach, pear, pyracantha, quince and cotoneaster
Scab of Stone Fruits
Affected Plants: Peaches, nectarines, apricots, and plums
Scorch of Trees and Shrubs
Affected Plants: numerous
Slime Mold of Turf
Affected plants: All turfgrass
Slugs
Affected Plants: numerous, hostas
Sod Webworm
Affected plants: Kentucky bluegrass, buffalograss, bermudagrass and bentgrass
Sooty Mold
Affected Plants: numerous
Spittlebugs
Affected Plants: Junipers and pine
Spotted Wing Drosophila
Affected plants: Blackberries, blueberries, boysenberries, raspberries, strawberries and grapes
Spruce, Needle Drop and Twig Dieback
Affected Plants: Blue Spruce
Spruce, Rhizosphaeria Needlecast
Affected Plants: Spruce
Spruce Spider Mite
Affected Plants: Spruce
Squash Bug
Affected plants: Squash and pumpkin
Squash Vine Borer
Affected plants: Primarily squash, pumpkins and gourds but cucumbers and melons also possible hosts
Squirrel Damage
Affected Plants: Trees
Stalk Borer
Affected Plants: numerous
Star-of-Bethlehem
Main impact: invasive in landscape
Stripe Smut of Turf
Affected plants: Kentucky bluegrass and creeping bentgrass
Summer Patch of Turf
Affected plants: Kentucky bluegrass and annual bluegrass
Sunscalded Fruit
Affected plants: Tomatoes and peppers
Thatch Control
Affected plants: Kentucky Bluegrass, Bermudagrass, Zoysiagrass and Creeping Bentgrass
Tomato, Bacterial Spot or Speck
Affected plants: Tomato
Tomato, Anthracnose
Affected plants: Tomato
Tomato, Bacterial Canker
Affected plants: Tomato
Tomato, Cracking
Affected plants: Tomato
Tomato, Early Blight and Septoria Leaf Spot
Affected plants: Tomato
Tomato, Fruit Not Setting
Affected plants: Tomatoes and peppers
Tomato, Fruit Slow to Ripen
Affected plants: Tomato
Tomato Fruitworm
Affected plants: Tomato, sweet corn
Tomato, Fusarium and Verticillium Wilt
Affected plants: Tomato
Tomato, Hard Core in Fruit
Affected plants: Tomato
Tomato Hornworm
Affected plants: Primarily tomato but can also attack eggplant, pepper, and potato
Tomato, Leaf Roll
Affected plants: Tomato
Tomato, Spider Mites
Affected plants: Many vegetables, tomato
Tomato, Spotted Wilt Virus
Affected plants: Tomato, pepper, plus many other vegetables and ornamentals
Tomato Stink Bug Damage
Affected plants: Tomato
Vine Crops Flowering But Not Setting Fruit
Affected plants: Cucumbers, Muskmelons, Watermelon, Pumpkins
Tomato, Walnut Wilt
Affected plants: Tomato, potato, blackberry, apple, lilac, asparagus, chrysanthemum, and peony
Tomato, Warty Stems
Affected plants: Tomato
Termites
Main impact: wooden structures
Trees, Sunscald on Trunk
Affected Plants: Honey locusts, fruit trees, ashes, oaks, maples, lindens and willows and other thin-barked trees
Trees, Controlling Unwanted Trees
Affected Plants: Volunteer trees
Trees, Lack of Fall Color
Affected Plants: Maples, oaks and various other trees.
Trees, Verticillium Wilt of Trees
Affected Plants: Catalpa, maple, Russian olive, redbud, smoketree, golden-rain tree, cherry and other stone fruits, and barberry
Trees, Winter Damage
Affected Plants: Trees
Trees with Cavities
Affected Plants: Trees
Trees with Mushroom Growth
Affected Plants: Trees
Wetwood and Slime Flux on Trees
Affected Plants: Elms, cottonwood and willow
Twig Girdler
Affected Plants: Elm, hickory, oak, linden, hackberry, apple, pecan, persimmon, poplar, sour gum, honeylocust, dogwood, and some flowering fruit trees
Walnut Caterpillar
Affected Plants: Primarily black walnut, pecan, and several species of hickory but may also attack birch, oak, willow, honeylocust and apple
Walnut Wilt
Affected Plants: Tomato, potato, blackberry, apple, lilac, asparagus, chrysanthemum, and peony.
Whiteflies
Affected Plants: numerous
White Clover
Main impact: weed in lawns
Wild Violet
Affected plants: Weeds
Winter Grain Mite
Affected plants: Kentucky bluegrass, perennial ryegrass, tall fescue and Chewings red fescue
Yellow-Bellied Sapsucker
Affected Plants: Pines, apples, maples and Bradford pear
Yellownecked Caterpillar
Affected Plants: Apple, pear, cherry, oak, hickory, beech, birch, elm, maple, pear, cherry, oak and walnut
Yellow Nutsedge
Affected plants: Lawn, turf, weeds
Yew Wet Feet
Affected plants: Yew
Zoysiagrass and Bermudagrass Mite
Affected plants: Zoysiagrass and Bermudagrass
Zoysiagrass, Large Patch
Affected plants: Zoyiagrass