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Forest & Grassland Health
Common Forest Insects & Diseases in Alaska
Nested within the State, Private, and Tribal Forestry branch of the U.S. Forest Service, Forest Health Protection monitors across all lands to meet the needs of federal, state, and private stakeholders and Tribal Nations. Select forest diseases, insects, noninfectious disorders, invasive plant, and other forest health topics from the menu below for detailed information, as well as links to partner pages. Follow #AlaskaForestHealth on Twitter and participate in the iNaturalist Alaska Forest Health Observations Project.
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Trending Topics Alder defoliators Aspen running canker Birch leafminers Spruce beetle Western blackheaded budworm Yellow-cedar decline
FOREST DISEASES
Foliage Diseases
- Cedar Leaf Blight
- Dothistroma Needle Blight
- Hardwood Leaf Rusts
- Hemlock-Blueberry Rust
- Spruce Needle Casts/Blights
- Spruce Needle Rust
- Viburnum Leaf & Stem Rust
Shoot, Twig & Bud Blights
Stem Diseases
- Conifer Stem Decays
- Hardwood Stem Decays
- Alder Canker
- Aspen Running Canker
- Aspen Target Canker
- Diplodia Gall
- Hemlock Canker
- Hemlock Dwarf Mistletoe
- Huckleberry Broom Rust
- Spruce Broom Rust
- Western Gall Rust
Root Diseases
- Annosus/Heterobasidion
Root & Butt Rot - Armillaria Root Disease
- Pholiota/Yellow-Cap Fungus
- Tomentosus Root Rot
Invasive Pathogens
NONINFECTIOUS DISORDERS
Forest Decline
Abiotic & Animal Damage
- Hemlock Fluting
- Brown Bear Damage to Yellow-cedar
- Drought & Winter Drying Damage to Conifers
- Flooding/Beaver Damage
- Porcupine Damage
- Western Redcedar Topkill
- Windthrow
OTHER TOPICS
FOREST INSECTS
Bark Beetles and Woodborers
- Ambrosia Beetle
- N. Spruce Engraver & Other Ips
- Spruce Beetle
- Western Balsam Bark Beetle
Defoliating Insects
Conifer Defoliators
- Balsam Woolly Adelgid
- Hemlock Sawfly
- Larch Sawfly
- Spruce Aphid
- Spruce Budworm
- Spruce & Larch Budmoth
- Western Blackheaded Budworm
Hardwood Defoliators
- Alder Defoliators
- Aspen Leafminer
- Birch Aphid
- Birch Leafminers
- Birch Leafroller
- Fireweed Hawk Moth
- Generalist Hardwood Defoliators
- Large Aspen Tortrix
- Leaf Beetles
- Rusty Tussock Moth
- Western Tent Caterpillar
- Willow Leafblotch Miner
Urban Tree & Plant Pests
INVASIVE PLANTS
PARTNER PAGES
University/Cooperative Extension Service
- Alaska Non-Native Plants List
- Alaska Exotic Plants Information Clearinghouse
- Alaska Weeds ID App
- Insects & Invasives
- Alaska Invasive Species Partnership
- Alaska IPM & Citizen Reporting
Other State & Fedaral Partners
- Forest Health Assessment & Applied Sciences Team
- National Forest Health Protection Page
- Alaska DNR - Division of Forestry - Forest Health