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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Raspberry > Wilted tips/loss of leaves

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Raspberry > Canes > Wilted tips/loss of leaves

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  • Image: Raspberry Cane Borer

Raspberry Cane Borer
Oberea bimaculata

  • Wilting may be evident at the tips of new shoots
  • Two rings of punctures about ½ inch apart, and located 4-6 inches below the growing tip, are apparent where the beetle has laid eggs
  • Adult is slender, ½ inch long, black, with yellow stripes and a yellow head with two black spots
  • Full grown larvae are ¾ inch long, cream colored, and legless
  • Adults are active in June
  • Larvae can be found inside canes from mid summer through fall
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  • Image: Raspberry Cane Maggot

Raspberry Cane Maggot
Pegomya rubivora

  • Feeding by maggots inside cane causes the young shoots to wilt
  • Damage occurs in early spring
  • Adult is a small, gray fly about two-thirds
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  • Image: Winter Injury

Winter Injury

  • Leaves of mature canes wilt and die at the top of the cane only
  • Flowering is sparse; flowers and fruit may form and fail to develop
  • New canes will be healthy
  • More information on Winter Injury...
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  • Image: Verticillium Wilt

Verticillium Wilt
Verticillium albo-atrum

  • Leaves turn yellow and fall off from the bottom of the plant up
  • Canes turn blue or have blue streaks
  • Reddish brown streaks may be seen in the center of infected canes if bark is peeled away
  • Black raspberries die in 1-3 years
  • Red raspberries may survive many years but with reduced vigor
  • More information on Verticillium Wilt...
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  • Image: Crown Gall 1
  • Image: Crown Gall 2
  • Image: Crown Gall 3

Crown Gall and Cane Gall
Agrobacterium tumefaciens, Agrobacterium rubi

  • Wilting may be evident
  • Spongy white tumor-like galls on the cane, roots, and crown
  • Older galls are brown to black and hard
  • Poor growth and fruit production may be seen on severely infected canes
  • More information on Crown Gall and Cane Gall...
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  • Image: Cane Blight

Cane Blight
Leptospaeria coniothyrium

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  • Image: Fire Blight

Fire Blight
Erwinia amylovora

  • Tips of young canes wilt, become blackened, and curl over into a “shepherd’s crook”
  • Developing berries become hard and dry
  • Leaf veins and petioles turn black, and canes die from top down
  • More information on Fireblight...

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