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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Pepper > Spots/blotches on leaves

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Pepper > Leaves > Spots/blotches on leaves

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Bacterial Spot
Xanthomonas campestris pv. Vesicatoria

  • Leaves have round brown spots with a dark edge
  • Leaf spots often start and are most severe on the lower leaves
  • Fruit has raised corky brown spots
  • Difficult to see bacterial streaming
  • More information on Bacterial Spot...
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Phytophthora Blight
Phytophthora capsici

  • Water soaked to tan bleached spots may form on leaves
  • Soft water soaked spots form on fruit
  • Fruit wither but remain attached and become coated in white fungal growth
  • Entire plant wilts and turns brown
  • Dark sunken spots form on stems, all leaves beyond this spot wilt
  • Disease spreads very rapidly in cool wet weather
  • More information on Phytophthora Blight...
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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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Cucumber mosaic virus, potato virus Y, tomato spotted wilt virus and more

  • Leaves are mottled with yellow and light green patches
  • Leaves may be misshapen; unusually long and thin like a shoestring or curled and deformed
  • Fruit may have yellow blotches, mottling or brown rings
  • Plants are stunted even when neighboring plants look healthy and tall
  • More information on Virus ...

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