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Alaska Forest Insects, Diseases & Invasive Plant Leaflets

Many insects and diseases affect trees in Alaska. These invasive plants are threatening forests and woodlands in different regions of the state.  Click on the titles below for general and diagnostic informatiom on some of the most common tree problems. Hard copies of the forest insect and disease leaflets (FIDL) can be obtained from: Ken Zogas, Forest Health Protection, USDA Forest Service, S&PF, 3301 C St., Suite 202, Anchorage, AK 99503, or by e-mail requests at: kzogas@fs.fed.us.
 

Insects

 

Aspen Leaf Miner pdf

Birch Aphids pdf

Birch Leaf Miner

Birch Leaf Miner - Biological Control Research pdfnew

Birch Leaf Roller,

Black-Headed Budworm

Black-Headed Budworm in Western United States - FIDL 45

Carpenter Ants: Insect Pests of Wood Products

Clearwing Birch Borers

Cottonwood Leaf Beetle

Eriophyid Mites

Engraver Beetles in Alaskan Forests

European Yellow Underwing pdf

Gall Aphids and Woolly Aphids on Spruce and Hemlock

Hemlock Sawfly - FIDL 31

Larch Sawfly, The

Large Aspen Tortrix

Large Aspen Tortrix, The - FIDL 139

Spear-Marked Black Moth - FIDL 156

Spruce Beetle, The - FIDL 127

The Spruce Beetle in Alaska Forests

Spruce Budworm

Spruce and Giant Conifer Aphids

Spruce and Larch Bud Moths

Western Spruce Budworm - FIDL 53

Willow Leafblotch Miner pdfnew

Wood Boring Insects in Alaska

Yellowheaded Spruce Sawfly pdf

 
 

Diseases

 

Armillaria Root Disease - FIDL 78

Cankers on Western Quaking Aspen - FIDL 152

Decay and Discoloration of Aspen - FIDL 149

Heart Rots of Western Hemlock - FIDL 90

Hemlock Dwarf Mistletoe - FIDL 135

Pine Gall Rust

Sirococcus Shoot Blight - FIDL 166

Spruce Broom Rust

Spruce Needle Cast

Spruce Needle Rust

Tomentosus Root Rot

White Trunk Rot of Hardwoods - FIDL 88

 

 
 

Invasive Plants

 

Thistles in Alaska pdf

Japanese Knotweed pdf

Orange Hawkweed pdf

Perennial Sowthistle pdf

Spotted Knapweed pdf

 
 

Other

 

Yellow-cedar Decline

Hazard Trees pdf new

Stem Fluting of Western Hemlock in Southeast Alaska