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ForesTree, A Homeowner's Resource Guide to California Tree HealthDisease Info - Mortality from Mountain Pine BeetlePest Info - Western Spruce BudwormTree ID - Jeffrey Pine Needles
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DISEASE AND PEST LIST FOR:

Box Elder
  • Acer negundo - Susceptible to Aphids and Beetle Borers, Branch Blight, Fusarium, Powdery Mildew, Root Rot and Verticillium. Additional and expanded information listed below.

  • For further tree information:
       SelecTree | Silvics of North America
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tree
Disease or Pest Name Description of Disease or Pest
Phytophthora Root and Crown Rot
Phytophthora cactorum
This disease, as its name implies, is characterized by red-brown exudate oozing from bark fissures in can...
Powdery Mildew
Microsphaera alni
Powdery mildew may occur on any green plant tissue or on flowers and fruits. Light colored mats of funga...
Fruittree leafroller
Archips argyrospila
"Fruittree leafroller can be a serious pest throughout California. It occurs on a very large number of or...
Urban Forest Ecosystems
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