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Tomato Pest Identification
Photo by J. Boucher, UConn
Indicates very common pests
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Tomato Pests
Early Blight: dark leaf spots with rings, yellow tissue around spots/vine lesions brown with light centers
Photo by J. Boucher, UConn Photo by J. Boucher, UConn
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Tomato Pests
Late Blight: large dark spots or areas on leaves, stems, and fruit/can be white flour-like growth on underside of leaf lesion, or on vine or fruit lesion
Photo by J. Allen, UConn
Photo by R. Wick, UMass
Photo by T. DeMaria, Marble Valley Farm,
Kent, CT
Photo by J. Allen, UConn
Photo by J. Allen, UConn
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Tomato Pests
Septoria leaf spot: small, dark spots with ash-grey centers
Photo by J. Boucher, UConn
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Tomato Pests
Anthracnose ripe rot: sunken, water-soaked fruit lesions, salmon-colored spores
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Leaf mold: light spots on top, dark-purple fuzz underneath
Photo by J. Boucher, UConn Photo by J. Boucher, UConn
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Tomato Pests
Powdery mildew: white, fuzzy leaf spots
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Grey Mold: large, grey, fuzzy area on stem or fruit/= Ghost Spot: white rings on fruit
Ghost spots
Photo by M. McGrath, Cornell University
Photo by M. McGrath, Cornell University
Photo by J. Boucher, UConn
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Tomato Pests
Fusarium crown rot: stem girdled near soil line, brown discoloration in stem and roots, bottom leaves yellow and wilt, plant death
Photo by J. Boucher, UConn
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Tomato Pests
Verticillium wilt: internal stem discolored brown near soil line, leaves and plants wilt and die
Photo by T. Zitter, Cornell University
Photo by R. Wick, UMass
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Tomato Pests
Phytophthora/Buck-eye rot: girdled stem, plant death/hard, brown spot or white spores on fruit
Photo by J. Boucher, UConn
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Tomato Pests
Pythium: girdled stem on seedlings, brown soft fruit rot, white fuzzy “shaving-cream-like” growth
Photo by R. Wick, UMass
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Tomato Pests
Southern blight: white growth on stem or brown resting spores, lower leaves wilt and die, plant death
Photo by J. Boucher, UConn
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Tomato Pests
Sclerotinia Blight/White Mold: white-cottony fungal growth, with black resting spores/soft watery fruit rot with large black spores
Photo by J. Allen, UConn
Photo by R. Wick, UMass
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Tomato Pests
Bacterial canker: yellow and brown leaf margins/ fruit spots white, sometimes with dark centers
Photo by J. Boucher, UConn Photo by J. Boucher, UConn
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Tomato Pests
Bacterial spec: tiny dark specs on leaves or fruit
Photo by J. Allen, UConn
Photo by R. Wick, UMass
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Tomato Pests
Bacterial spot: dark spots on fruit or leaves
Photo by R. Wick, Umass
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Tomato Pests
Pith Necrosis: brown stem and fruit spots/brown, hollow stems/adventitious roots grow on stems
Photos by M. McGrath, Cornell University
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Tomato Pests
Tomato or Tobacco mosaic virus: stunted, mottled and distorted leaves, fruit with internal or external browning
Photo by R. Wick, UMass
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Tomato Pests
Tomato spotted wilt virus: mottled or streaked leaves turn brown and droop, plants stunted, fruit with yellow or multicolor spots
Photo by R. Wick, UMass
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Tomato Pests
Blossom end rot: collapse of the tissue at the blossom end of the fruit, followed by soft rot or dark fungal growth invading damaged tissue
Photo by R. Durgy, CAES
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Tomato Pests
Rain check: numerous tiny cracks in the tomato fruit surface, can join to form larger cracks
Photo by R. Durgy, CAES
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Tomato Pests
Growth cracks: can be around the fruit or down the sides of the fruit
Photo by R. Durgy, CAES Photo by J. Boucher, UConn
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Tomato Pests
Catfacing: misshaped fruit on blossom end, with scars and holes
Photo by R. Durgy, CAES
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Tomato Pests
Greywall or blotchy ripening: yellow or white on surface and inner flesh
Photo by John Howell, UMass
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Tomato Pests
Zipper: brown scar down side of fruit, sometimes with shallow hole midway
Photo by J. Howell, UMass
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Tomato Pests
Paraquat injury: dark-brown vines, white along leaf veins, usually worse in mid-canopy
Photo by J. Allen
Photo by J. Boucher, UConn
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Tomato Pests
Flea beetles: small dark beetles pit leaves
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Aphids: tiny, green, pear-shaped with “tail pipes”, white cast skins, sticky “honeydew” excretion
Photo by J. Boucher, UConn
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Tomato Pests
Tomato/tobacco hornworm: large, green caterpillar with white lines or V’s on side and “horn” on back. May be covered with white pupae of parasitic wasp. Defoliates plants, scars fruit or produces large holes
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Tomato fruitworm = corn earworm: green or yellow caterpillar with stripes, 1/4 –inch hole in fruit
Photo by T. Kuhar, Virginia Tech
Photo by J. Boucher, UConn
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Tomato Pests
Cutworms (spotted or variegated): large grey or brown caterpillars with black or yellow spots, large holes in fruit
Photo by Becky Sideman, UNH
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Tomato Pests
Two-spotted spider mites: tiny with two dark spots, with webbing/stippled or speckled leaves
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Colorado potato beetle: Adult yellow and black stripes/larva pink with black spots, slug-like, chew holes in leaves, defoliate plants, and scar fruit
Photo by J. Boucher, UConn Photo by J. Boucher, UConn
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Tomato Pests
(Green) stink bug: hard-bodied, shield-shaped/ yellow spots on mature fruit
Photo by R. Hazzard, UMass
Photo by J. Boucher, UConn
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Tomato Pests
Brown marmorated stink bug: white stripes on antennae, suck plant juices from vines and fruit, “bruise” fruit
Photo by A. Eaton, UNH
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Tomato Pests
Tarnished plant bug: adult/ nymph/ fruit damage
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
Photo by J. Boucher, UConn
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Tomato Pests
Tortoise beetle: adult/ and larva with waste on back, chews small holes in leaves
Photo by A. Eaton, UNH
Photo by J. Boucher, UConn
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Tomato Pests
Slug feeding: hole surrounded by surface feeding
Photo by J. Boucher, UConn