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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Viburnum > Small piles of sawdust on lower stem

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Viburnum > Stems/Branches > Small piles of sawdust on lower stem

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Viburnum clearwing borer
Synanthedon viburni

  • Plants may be wilted
  • Stems may dieback or have sparse foliage with a few leaves at tip
  • Lower part of stems are gnarled and scarred with sawdust
  • Pupal cases may be found sticking out of holes in bark in spring
  • Entire bush may die
  • Adult borers have ½ inch bluish black bodies with yellow markings and a ¾ inch wingspan – wings are clear
  • More information on Viburnum clearwing borer

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