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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Tomato > Plant wilts

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Tomato > Whole plant > Plant wilts

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  • Image: White Mold 1
  • Image: White Mold 2
  • Image: White Mold 3

White Mold
Sclerotinia sclerotiorum

  • Dark, firm water-soaked lesion on stem
  • Girdled stems die and turn bone white
  • Inside dead stems are black mouse poop shaped sclerotia
  • Fruit are soft and rotted
  • Cottony white mycelia inside and outside infected stems when humidity is high
  • Favored by cool humid conditions
  • More information on White Mold...
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  • Image: 1
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Verticillium Wilt
Verticillium albo-atrum, Verticillium dahlia

  • A yellow wedge shaped lesion on leaf often with a brown center
  • Leaves yellow and wilt, often one side only
  • Lower leaves wilt first, eventually whole plant wilts
  • In a lengthwise cut of the stem near the soil line, veins are tan, center is green
  • Common in cool temperatures 68° to 75° F
  • More information on Verticillium Wilt...
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  • Image: Fusarium Wilt 1
  • Image: Fusarium Wilt 2
  • Image: Fusarium Wilt 3

Fusarium Wilt
Fusarium oxysporum

  • Problem in heirloom varieties; most modern cultivars are resistant
  • Leaves yellow and wilt, often one side only
  • Lower leaves wilt first, eventually whole plant wilts
  • In a lengthwise cut of the stem near the soil line, veins are brown, center is green
  • Occurs when air and soil temperature are above 80° F
  • More information on Fusarium Wilt...
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  • Image: Damping Off 1
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Damping Off
Pythium sp. Rhizoctonia sp. Phytophthora sp. and others

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