Find Forest Health Help
For sick forest trees, contact a DNR forest health specialist or forester. For sick ornamental or urban trees, contact a certified arborist [exit DNR] or your county UW-Extension Office [exit DNR].
Forest health news
Sick tree diagnostics
- What's Wrong With My Deciduous Tree? [exit DNR] – University of Minnesota
- What's Wrong With My Conifer? [exit DNR] – UM.
- Plant Disease Diagnostics Clinic [exit DNR] – University of Wisconsin-Madison
Insect identification
- What Insect is This? [exit DNR] - U. of Minnesota
- UW-Madison Insect Identification [exit DNR]
- BugGuide.Net [exit DNR]
Tree identification
Publications
- All forest health publications
- Guidelines
- Factsheets
- Armillaria [PDF]
- Beech Bark Disease [PDF]
- Common Fungal Diseases of Spruce [PDF]
- Conifer Bark Beetle [PDF]
- Diplodia [PDF]
- Emerald Ash Borer [PDF]
- Environmental Causes of Tree Damage [PDF]
- Hemlock Woolly Adelgid [PDF]
- Heterobasidion Root Disease [PDF]
- Hickory Dieback and Mortality [PDF]
- Oak wilt [PDF]
- Peach Bark Beetle and Cherry Scallop Shell Moth [PDF]
- Wisconsin DNR Forest Health 2021 Annual Report [PDF]
- To access archived regional and annual reports dating back to 1951, contact your regional forest health specialist.