Updated: March 7, 2021
holly berry midge damage

Holly midge damage. Photo: John Davidson, University of Maryland

Key points

  • Holly berry gall midge causes berries of holly to remain green during the fall and winter.
  • The adult midge lays eggs in the young fruit of hollies while the petals are still present.
  • The maggots hatch and feed inside the developing fruit. The berries grow to near normal size but remain green.

Management

  • There are no chemical controls.
  • Early blooming trees are more likely to be attacked.
  • There are resistant cultivars available. Check with your local nursery for cultivars in your area.

Rev. 2020