Christmas tree (Douglas-fir)-Pine needle scale

Chionaspis pinifoliae

Pest description and crop damage White scale flock needles. Hosts: Douglas-fir and pines. Eggs hatch May or June, perhaps July.

Management-chemical control

Apply to crawler stage.

  • azadirachtin (AzaDirect and others)-Some formulations are OMRI-listed for organic production.
  • bifenthrin ( OnyxPro, Sniper and others)-Restricted use pesticide. (Group 3)
  • buprofezin (Talus and others)-(Group 16)
  • chlorpyrifos (Lorsban Advanced, Warhawk and others)-RESTRICTED USE IN OREGON. (Group 1)
  • dinotefuran (Safari 20 SG)- (Group 4)
  • horticultural oil/soap (M-Pede, Ultra-Pure, 440 Superior Oil and others)-Some formulations are OMRI-listed for organic production.
  • sulfoxaflor (Transform WG)-(Group 4c)