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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Blueberry > Soft or rotten fruit

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Blueberry > Fruit > Soft or rotten fruit

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  • Spotted Winted Drosophila 1
  • Spotted Winged Drosophila 2
  • Spotted Winged Drosophila 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: Iron Chlorosis
  • Image: 2

Colletotrichum gloeosporioides

  • Reddish-brown round to irregular spots on leaves
  • Berries become soft and wrinkled from the blossom end
  • Salmon to orange colored sticky spore masses develop on infected berries and stems when wet
  • Infected twigs/canes have dark brown lesions with raised bumps arranged in concentric circles
  • More information on Anthracnose
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  • Image: Powdery Mildew 1
  • Image: Powdery Mildew 2

Botrytis Blight/Gray Mold
Botrytis cinerea

  • Berries are covered with a fuzzy gray mold
  • Infected blossoms turn brown and become covered with a fuzzy gray mold
  • Leaves have brown, irregular lesions and may become distorted
  • Twigs turn brownish-black and become gray
  • More information on Botrytis Blight/Gray Mold
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  • Image: Honeycrisp Leaf Mottle Disorder 1
  • Image: Honeycrisp Leaf Mottle Disorder 2

Mummy Berry
Monilinia vaccinii-corymbosi

  • Infected berries appear pinkish tan and feel rubbery
  • Berries eventually become whitish gray, shriveled, and drop off
  • In spring, new leaves turn brown along the veins and wilt
  • Young shoots bend into a shepherd's crook
  • More information on Mummy Berry

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