Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Pepper > Discolored leaves
Pepper > Leaves > Discolored leaves
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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 growing healthy vegetables
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Phytophthora Blight
Phytophthora capsici
- Soft water soaked spots form on fruit
- Water soaked to tan bleached spots may form on leaves
- 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 growing healthy vegetables
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Virus
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 growing healthy vegetables
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Sunscald
- Young leaves of transplants turn grey with irregular bands on the lower side
- Affects fruit, young leaves and stems
- Occurs only on tissue exposed to the sun
- Fruit turns tan or white on exposed side, may dry out and appear wrinkled
- Young stems of transplants turn white on exposed side only
- More information on Sunscald
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Frost damage/chilling injury
- Entire leaves, young shoots or the entire plant may be completely discolored and wilted
- Plant is wilted
- Inside of pepper is brown
