Woody Ornamental Integrated Pest Management at Penn State
HOME: Woody Ornamental Integrated Pest Management
FACT SHEETS: Identification and management of insects and diseases on landscape plants
PEST ACTIVITY: Weekly reports on insect and disease activity in Southwestern Pennsylvania
PEST DIAGNOSIS: Images of major insect and disease pests of landscape plants
CLASSES: Educational offerings in Southwestern Pennsylvania
CONTACT US: Mailing address, phone number, fax, and email information
SERVICES: Soil testing, insect and disease identification
RELATED LINKS: Integrated Pest Management information on the Web



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Douglas Fir Pest Diagnosis

Pest Diagnosis > Douglas Fir

1. What part of the plant is damaged by pests?
Choose --> Leaves | Bark or Stems

Leaves

2. Which photo matches the damage on my plant? (For additional photos and facts, click on the fact sheet for each pest .)

Cooley Spruce Gall Adelgid

Fact Sheet

Cooley spruce gall adelgid nymphs producing white waxy threads on Douglas-fir
Cooley spruce gall adelgid nymphs producing white waxy threads on Douglas-fir

Yes, this is the pest.

 

Bark or Stems

No images available yet.

3. Look for the name of the pest under the Control Measures for this plant.

 
 

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