Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Tomato > Hollowed out stems
Tomato > Stem > Hollowed out stems
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Stalk Borers
- Damage occurs June to early August
- Leaves wilt
- Entrance hole where the caterpillar bores into the stem near ground level
- Caterpillar can sometimes be found in stem
- 3/4 to 2 inches long
- Reddish brown head, brownish purple body with whitish stripes
- More information on Stalkborers
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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