Christmas tree (Pine)-Pine bark adelgid

Pinus strobi

Pest description and crop damage Appear as white, woolly mass on trunk or stem. May severely distort new growth.

See table:

Management-chemical control

  • bifenthrin (Brigade, OnyxPro, Sniper and others)-Restricted use pesticide. (Group 3)
  • chlorpyrifos (Lorsban Advanced, Warhawk and others)-Apply to control crawler stage around bud break. (Group 1)
  • dinotefuran (Safari 20 SG)-Check registration status at time of application. (Group 4)
  • imidacloprid (Admire Pro, Prey 1.6 and others)-Apply to control crawler stage around bud break. (Group 4)
  • sucrose octanoate (SucraShield and others)-Some formulations are OMRI-listed for organic production.
  • thiamethoxam (Flagship 25 WG)-(Group 4)