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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Grape > Holes in young woody vines (canes)

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Grape > Woody Vines > Holes in young woody vines (canes)

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  • Image: Apple Twig Borer 3
  • Image: Apple Twig Borer 2
  • Image: Apple Twig Borer 1

Apple Twig Borer

  • Entrance holes, about 1/2 cm in diameter, are obvious where adults have tunneled into canes
  • Adults are active in August-September
  • Adults are elongate, approximately 1/5 to 1/2 inch, with a reddish brown to brownish black color
  • More information on Apple Twig Borer...

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