Horticulture and Natural Resources

General Pests

17-Year Periodical Cicadas

17 year Cicada on Leaf

Affected Plants: maple, hickory, hawthorn, apple, peach, cherry, and pear.
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Ants

Carpenter Ant

Affected Plants: decaying wood
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Aphids

Aphids on Branch

Affected Plants: most plants
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Armyworms and Cutworms

Cutworm Moth

Affected Plants: numerous
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Fall Armyworms

Fall Armyworm

Affected Plants: mainly grasses
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Aster Yellows

Coneflower - Aster Yellows

Affected Plants: numerous
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Carpenter Bees

Carpenter bee on untreated wood

Affected Plants: untreated wood

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Chiggers

Red Chigger on dirt

Affected: Humans and other animals

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Cicada Killer

Cicada Killer Wasp on Leaf

Affected Plants: none, affects cicadas primarily

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Dodder

Dodder

Affected Plants: numerous

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Flatid Planthopper

Flatid Planthopper

Affected Plants: numerous

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Flooding and Plants

Flooding and plants

Affected Plants: all

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Freeze and Frost
Damage in Spring

Freeze and frost damage on plants

Affected Plants: numerous

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Grasshoppers

Grasshopper

Affected Plants: numerous

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Henbit and Chickweed

Henbit

Affected Plants: any, considered weed

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Impatiens Downy Mildew

Impatiens downy mildew

Affected Plants: Various Impatiens

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Japanese Beetle

Japanese Beetle

Affected Plants: numerous, including rose, birch, linden, crabapple, grape, Virginia creeper, and buckeye

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Lady Bug Asian

Asian Lady Bug

Main impacts: aphid infestations and overwintering in buildings

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Minute Pirate Bug

Minute Pirate Bug

Affected Plants: numerous

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Two-Spotted Mite

Two spotted mite

Affected Plants: numerous

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Mosquitos

Mosquito

Main impacts: humans

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Nematodes

Neamtodes on plant roots

Affected Plants: numerous

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Oxalis (Yellow Woodsorrel)

Oxalis

Main impact: perennial weed in lawn

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Roly-Polys, Pillbugs, & Sowbugs

Pillbug and rolypoly

Affected Plants: numerous young seedlings

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Poison Ivy

Poison Ivy leavs

Main impact: rash in humans

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Pollination Problems

Bee on flower petal

Affected Plants: numerous

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Slugs

slug

Affected Plants: numerous, hostas

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Sooty Mold

Sooty mold on leaf

Affected Plants: numerous

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Stalk Borer

Stalk borer

Affected Plants: numerous

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Star-of-Bethlehem

Star of bethlehem

Main impact: invasive in landscape

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Termites

termites vs ants

Main impact: wooden structures

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Whiteflies

Whitefly on leaf

Affected Plants: numerous

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White Clover

White clover

Main impact: weed in lawns

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