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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Tomato > Stem rot at soil line

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Tomato > Stem > Stem rot at soil line

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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: Damping Off 1
  • Image: Damping Off 2
  • Image: Damping Off 3

Damping Off
Pythium sp. Rhizoctonia sp. Phytophthora sp. and others

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