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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Raspberry > Discolored or rotten berries

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Raspberry > Fruit > Discolored or rotten berries

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  • Image: Botrytis 1
  • Image: Botrytis 2
  • Image: Botrytis 3

Gray Mold
Botrytis cinerea

  • Infected fruit may remain attached as shriveled, dried, black “mummies”
  • Flowers are brown to black and dry out
  • Gray powdery spores cover part or all of the infected fruit under moist conditions
  • Disease favored by wet conditions and temperatures between 41-86° F
  • Light brown oval lesions form on canes where the leaves attach, and faded brown concentric circles are often visible within the lesion
  • More information on Gray Mold...
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  • Image: Botrytis 1
  • Image: Botrytis 2
  • Image: Botrytis 3

Spotted Winged Drosophila
Drosophila Suzukii

  • Active in gardens from July to September
  • Larvae feed on healthy, intact, ripening fruits
  • Larvae feed within the berries causing brown, sunken areas
  • Fruit becomes soft and decays
  • Adult flies are small (1/8 - 1/12 inch) long, yellowish-brown and red eyes, larvae are small (1/8” long), white and cylindrical
  • More information on Spotted Winged Drosophila
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  • Image: Suncald


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