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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Dogwood > Holes in stems

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Dogwood > Stems/branches > Holes in stems

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  • Image: Codling moth 1
  • Image: Codling moth 2

Dogwood borer
Synanthedon scitula

  • Holes and brown colored frass around pruning scars, injuries and burr knots
  • Crown dieback
  • Epicormic growth beneath infested area on tree
  • Particularly a pest of flowering dogwood
  • More information on Dogwood borer
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  • Image: White Rot 1
  • Image: White Rot 2
  • Image: White Rot 3

Dogwood twig borer
Oberea tripunctata

  • Larval tunnels inside branches, making holes in stems to push out frass and sawdust
  • Larvae feed downward, holes often occur near outside end of branches
  • Larval feeding cases leaves on random branches to wilt and turn brown
  • Adults chew on the underside of midrib of leaves causing the leaf to curl downward at tip
  • More information on Dogwood twig borer

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