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Home > Pests of Trees and Shrubs

Pests of Trees and Shrubs

     Bugs
     Diseases
     Other Critters

 

Bugs

Japanese beetle adults and damage

Japanese Beetle

fall webworm web

Fall Webworm

tent caterpillar tent

Tent Caterpillars

     

apple maggot adult

Apple Maggot

arborvitae leafminerArborvitae Leafminer

leaf damage caused by birch leafminer

Birch Leafminer

     

Black Vine Weevil

boxelder bug adult

Boxelder Bug

browntail moth larvae

Browntail Moth

     

bruce spanworm larva

Bruce Spanworm

elm leaf beetle larvae

Elm Leaf Beetle

Elongate Hemlock Scale

     

galls

Galls

gypsy mothGypsy Moth

hemlcok woolly adelgid

Hemlock Woolly Adelgid

     

white apple leafhopper

Leafhoppers and Spittlebugs

pine leaf adelgid gall

Pine Leaf Adelgid

Plum Curculio

     

spider mitesSpider Mites

green stink bug adult

Stink Bugs

tarnished plant bug adult

Tarnished Plant Bug

     

Viburnum Leaf Beetle

western conifer seed bug adult

Western Conifer Seed Bug

damage due to white pine weevil

White Pine Weevil

     
winter mothWinter Moth    
Didn't find what you were looking for? More Help with Bug Identification

Diseases

Anthracnose on maple

Anthracnose

apple scab

Apple Scab

galls

Galls

     

powdery mildew on maple

Powdery Mildew

White Pine Blister Rust

White Pine Blister Rust

salt damage on pine

Other Problems

Didn't find what you were looking for? More Help with Disease Identification

Other Critters

Voles

chipmunk

Chipmunk

gray squirrel

Squirrels

     

Woodchuck (Groundhog)

raccoon

Raccoon

porcupine in tree

Porcupine

     

woodpecker

Woodpeckers

sparrow in tree

Sparrows, Crows, Starlings

 
Didn't find what you were looking for? More Help with Critter Identification

 

 

 

[Photos, left to right: (apple maggot) Joseph Berger, Bugwood.org; (arborvitae leafminer) Bruce Watt, University of Maine, Bugwood.org; (birch leafminer) Whitney Cranshaw, Colorado State University, Bugwood.org; (black vine weevil) Joseph Berger, Bugwood.org; (boxelder bug) Joseph Berger, Bugwood.org; (browntail moth) Jan Samanek, State Phytosanitary Administration, Bugwood.org; (bruce spanworm) E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, Bugwood.org; (elm leaf beetle) Whitney Cranshaw, Colorado State University, Bugwood.org; (elongate hemlock scale) Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org; (fall webworm) Steven Katovich, USDA Forest Service, Bugwood.org; (gypsy moth) Maine Forest Service; (hemlock woolly adelgid) Connecticut Agricultural Experiment Station Archive, Connecticut Agricultural Experiment Station, Bugwood.org; (leafhoppers) Whitney Cranshaw, Colorado State University, Bugwood.org; (pine leaf adelgid) Whitney Cranshaw, Colorado State University, Bugwood.org; (plum curculio) Utah State University Cooperative Extension; (stink bugs) David Cappaert, Michigan State University, Bugwood.org; (tarnished plant bug) Russ Ottens, University of Georgia, Bugwood.org; (tent caterpillars) Catherine Herms, The Ohio State University, Bugwood.org; (viburnum leaf beetle ) Paul Weston, Cornell University, Bugwood.org; (western conifer seed bug) Joseph Berger, Bugwood.org; (white pine weevil) E. Bradford Walker, Vermont Department of Forests, Parks and Recreation, Bugwood.org; (anthracnose) Dr. Wayne Sinclair, Cornell University; (apple scab) Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org; (galls) William M. Ciesla, Forest Health Management International, Bugwood.org; James Solomon, USDA Forest Service, Bugwood.org; Steven Katovich, USDA Forest Service, Bugwood.org; Steven Katovich, USDA Forest Service, Bugwood.org; (powdery mildew) Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org; (white pine blister rust) Joseph O'Brien, USDA Forest Service, Bugwood.org; (other) University of Minnesota Extension; (voles) USDA Forest Service - North Central Research Station Archive, USDA Forest Service, Bugwood.org; (chipmunk) David Cappaert, Michigan State University, Bugwood.org; (squirrels) Joseph LaForest, University of Georgia, Bugwood.org; (woodchuck) Gilles Gonthier; (raccoon) Ricky Layson, Ricky Layson Photography, Bugwood.org; (porcupine) Joseph O'Brien, USDA Forest Service, Bugwood.org; (woodpeckers) Johnny N. Dell, Bugwood.org; (sparrows, crows, starlings) Terry Spivey, USDA Forest Service, Bugwood.org]

 

 
It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.