Bulletin E2839
A Pocket Guide for IPM Scouting of Woody Landscape Plants
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November 11, 2002 - Diane Brown-Rytlewski
Introduction
This pocket IPM scouting guide for woody landscape plants was designed for field use. It contains information to help identify and manage common insects, mites and their injury, diseases, abiotic plant health problems, damage caused by animals, and common beneficial insects. It contains phenological indicator plants to use for monitoring pest insect stages. It is not intended to be all inclusive; there are many more pests than this guide can cover within its limited number of pages. References for more detailed information are listed within the guide. In addition to those, several comprehensive guides are listed below. Specific pesticides are not listed in this guide. Recommendations change frequently as new products become available and older ones are taken off the market. We suggest you contact your local Extension educator for current recommendations.
For reference:
- Distinguishing between caterpillars and sawflies
- Scouting tips - phenological indicators
- Tools for scouting
Common insect pests and diseases of woody landscape plants
Insects and mites
- Aphids
- Ash flower gall mite
- Ash plant bug
- Black vine weevil
- Bronze birch borer
- Cooley spruce gall adelgid
- Cottony maple scale
- Eastern spruce gall adelgid
- Eastern tent caterpillar
- Emerald ash borer
- Euonymus scale
- European pine sawfly
- Fall webworm
- Flat-headed apple tree borer
- Fletcher scale
- Gall-producing mites
- Gypsy moth
- Honeylocust mite
- Honeylocust plant bug
- Honeylocust leafhopper
- Japanese beetle
- Juniper scale
- Leaf-mining sawflies
- Oystershell scale
- Pine needle scale
- Potato leafhopper
- Rose chafer
- Slug sawflies
- Spruce spider mite
- Twolined chestnut borer
- Twospotted spider mite
Diseases
- Anthracnose of shade trees
- Apple scab
- Beech bark disease
- Black spot
- Botryosphaeria canker
- Cedar-apple rust
- Cedar-hawthorn rust
- Cedar-quince rust
- Crown gall
- Cytospora canker
- Diplodia
- Dogwood anthracnose
- Dutch elm disease
- Fire blight
- Juniper tip blight
- Oak wilt
- Phytophthora dieback
- Phytophthora root and crown rot
- Powdery mildews
- Rhizosphaera needlecast
- Sphaeropsis tip blight
- Tar spot
- Verticillium wilt
Animal damage
Abiotic injury
- Chlorosis
- Drought
- Fall needle drop
- Freeze damage
- Frost damage
- Girdling wires and ropes
- Improper planting depth
- Overmulching
- Salt
- Scorch
Natural enemies