Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Tomato > Stem rot at soil line
Tomato > Stem > Stem rot at soil line
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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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Damping Off
Pythium sp. Rhizoctonia sp. Phytophthora sp. and others
- Occurs in seedlings and young transplants only
- First stem turns dark at soil line
- Plant wilts, turns dark and rots
- More information on Damping Off
