Christmas tree (True fir)-Balsam twig aphid

Mindarus abietinus

Pest description and crop damage Small, yellow-green aphids with woolly exudates attack new terminals.

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Management-chemical control

  • bifenthrin (Brigade, OnyxPro, Sniper and others)-Restricted use pesticide. (Group 3)
  • carbaryl (Sevin and others)-(Group 1)
  • chlorpyrifos (Lorsban Advanced, Warhawk and others)-Restricted use pesticide. (Group 1)
  • dinotefuran (Safari 20 SG)-Check registration status at time of application. (Group 4)
  • esfenvalerate (Asana XL and others)-Restricted use. (Group 3)
  • flupyradifurone (Altus)-(Group 4)
  • imidacloprid (Admire Pro, Prey 1.6 and others)-(Group 4)
  • insecticidal soaps and oils (Ecotec, M-pede, Ultra-Pure Oil, 440 Superior Oil, and others)-Some formulations are OMRI-listed for organic production. Note: Some oils may cause discoloration.
  • pymetrozine (Endeavor)-(Group 9)
  • spirotetramet (Ultor, Movento)-(Group 23)
  • sucrose octanoate (SucraShield and others)-Some formulations are OMRI-listed for organic production.
  • thiamethoxam (Flagship 25 WG)-(Group 4)

Management-biological control

  • aphid predators (Aphidoletes aphidimyza, Aphidius spp., Hippodamia spp., Chrysopa spp.)-Consider attracting predators with forage plantings as keeping some species of predators on-site has challenged growers.
  • Beauveria bassiana (BotaniGard ES)

See: