Pacific Northwest Insect Management Handbook

Christmas tree (Pine)-Black pineleaf scale

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Nuculaspis californica

Management-chemical control

  • azadirachtin (AzaDirect and others)-Some formulations are OMRI-listed for organic production.
  • bifenthrin (OnyxPro, Sniper and others) (Group 3A)-Restricted use pesticide. Some products not registered for use in Washington.
  • buprofezin (Talus and others) (Group 16)
  • dinotefuran (Safari 20 SG) (Group 4A)
  • horticultural oil/soap (M-Pede and others)-Test for phytotoxicity for any new oil product prior to widespread use. Some formulations are OMRI-listed for organic production.
  • spirotetramat (Movento) (Group 23)
  • sulfoxaflor (Transform WG) (Group 4C)-Crawler stage application.

Kaur, N. (Ed.). 2026 Pacific Northwest Insect Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

Trade-name products and services are mentioned as illustrations only. This does not mean that the participating Extension Services endorse these products and services or that they intend to discriminate against products and services not mentioned.