Affecting Vegetables

Aphids
Aphid
Description:
Pear-shaped, soft bodied insects; can we winged or wingless. Most commonly green but can be black, dark brown, yellow, white, bronze, red or pink.

 

Damage:
Suck sap while feeding on leaves, stems or roots. Can be found on growing tips, undersides of leaves, along stems and in roots.

 

Signs
Reduction in plant vigour; wilting and distortion of plant tissue - curled, puckered or distorted growth. Excrete honeydew, a sticky fluid that can lead to sooty mold development and also attracts ants, wasps and other flies. In some cases can cause red blistering on leaves.

 

What it attacks
All vegetables

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Cabbageworm
Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org
Description:
Velvety green caterpillar with a yellow stripe running down its back; adult is a white butterfly.

 

Damage:
Chew ragged holes in leaves, may bore into heads and contaminate edible portions of the crop.

 

Signs
Nuisance, causes holes in leaves.

 

What it attacks
Cabbage and other cruciferous vegetables

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Carrot Rust Fly
Whitney Cranshaw, Colorado State University, Bugwood.org
Description:
Small light yellow maggot, adult is a slender, shiny black fly.

 

Damage:
Maggots tunnel into and feed on carrots.

 

Signs
Kill young carrots, stunt or fork carrots, leave trails in the carrots in which bacteria and fungus can enter rendering them inedible.

 

What it attacks
Carrots

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Colorado Potato Beetle
Colorado Potato Beetle
Description:
Oval-shaped beetles with black and yellow stripes; red larvae with black spots.

 

Damage:
Chew ragged holes in leaves.

 

Signs
If feeding occurs prior to blooming, stresses plant causing reduced blooming and fruit production.

 

What it attacks
Potato, eggplants, peppers, and tomatoes

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Cutworms
University of Georgia Archive, University of Georgia, Bugwood.org
Description:
Fleshy, caterpillar-like worms that curl up when disturbed.

 

Damage:
Chew off, sever, stems at or just below ground level. Feed at night.

 

Signs
Stems of plants laying on the ground.

 

What it attacks
All vegetables

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European Corn Borer
Jan Samanek, State Phytosanitary Administration, Bugwood.org
Description:
Large green, brown, or pink caterpillar with dark brown heads.

 

Damage:
Chew tiny shot holes in leaves, bore into stalks and ears to feed on the cob and kernels. Boring disrupts.

 

Signs
Yellowing of leaves and reduced plant vigour. Damage to corn kernels and ears.

 

What it attacks
Corn and tomatoes

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Flea Beetle
Russ Ottens, University of Georgia, Bugwood.org
Description:
Very small, shiny black beetle with jumping hind legs.

 

Damage:
Young larvae feed on leaves causing skeletonizing; adults chew holes in the leaves.

 

Signs
Unsightly, nuisance.

 

What it attacks
Cabbage, beets, broccoli, Brussels sprouts, corn, eggplant, kohlrabi, potato, radish, rutabaga, tomato and turnip

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Leafhoppers
Leafhoppers
Description:
Small, slender pale green, yellow or white insects that jump and hop.

 

Damage:
Suck sap while feeding on leaves; disrupt sap flow of plants.

 

Signs
Bleaching and mottling of leaves; leaves may turn brown and curl up at the edges, plants become stunted with a decline in vigour.

 

What it attacks:
Carrots, celery, cucumber, lettuce, and potato

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Root maggots
Root maggotsMary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
Description:
Small legless white maggots.

 

Damage:
Maggots tunnel into roots rendering them inedible.

 

Signs
Plants appear stressed, yellowing of leaves, plants may wilt and die.

 

What it attacks:
Broccoli, Brussels sprouts, cabbage, cauliflower, radish, rutabaga, turnips, and others

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Slugs
Slugs
Description:
Slimy black-brown speckled mollusks chew large irregular holes in leaves and gouging holes in ripe and unripe fruit.

 

Damage:
Irregular holes with smooth edges are chewed in leaves.

 

Signs
Slimy and/or shiny trails left behind by slugs.

 

What it attacks:
Ornamentals and fruit

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Spider mites
Spider mites
Description:
Tiny rounded eight-legged insect.

 

Damage:
Puncture leaf and suck out both water and food producing green chlorophyll.

 

Signs
Leaves become speckled with yellow blotches; stippling and dotting on leaves; leaves may fall prematurely; fine webbing on leaves, in leaf crotches or on flower buds; reduces vigour.

 

What it attacks:
All ornamentals

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Spittlebug
Spittlebug
Description:
Nymphs are pale green insects found in spittle mass, adults are small tan-brown insects that resemble leafhoppers.

 

Damage:
Suck sap from leaves, shoots and stems. Spittlebugs produce a spittle mass which is the combination of leaf juices, air and mucus; the spittle mass is to protect the insect from predators and from drying out.

 

Signs
Will see a spittle mass on stems on plants. Looks like someone spit on the plant. Nuisance, can be sprayed off with water.

 

What it attacks:
All ornamentals

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Thrips
Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org
Description:
Tiny, slender pale yellow, green or brown insects.

 

Damage:
Pierce plant cells and suck out the contents.

 

Signs
Injured tissue dies producing dead spots, distorted blooms and leaves, and balled flowers.

 

What it attacks:
Beans, cabbage, onions, peas, and other crops

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