2024 Spongy Moth Review

By Bill McNee, DNR Forest Health Specialist, Oshkosh;
Bill.McNee@wisconsin.gov or 920-360-0942

A tree shows high numbers of spongy moth caterpillars, though the majority of the caterpillars have been killed either by virus (hanging in an inverted V) or fungus (hanging in a stretched line, head down). The virus and fungus helped to quell a potential outbreak in many areas of the state in 2024.

A tree shows high numbers of spongy moth caterpillars, though the majority of the caterpillars have been killed either by virus (hanging in an inverted V) or fungus (hanging in a stretched line, head down). The virus and fungus helped to quell a potential outbreak in many areas of the state in 2024. / Photo Credit: Bill McNee, Wisconsin DNR

As the 2023 spongy moth season ended, there were hopes for a return to colder and wetter conditions in 2024 so that the spongy moth outbreak would decline or even come to an end.

What wound up happening in Wisconsin was the “lost winter,” the warmest since recordkeeping began in 1895. Given this warmth, there were concerns that the widespread spongy moth outbreak would continue for a third consecutive summer, with good caterpillar survival, ongoing defoliation and high rates of tree mortality in already stressed forests.

Continue reading “2024 Spongy Moth Review”

Cooperative Enlists Public To Make Tree Health A Snap

By Art Kabelowsky, DNR Outreach and Communications, Fitchburg;
Arthur.Kabelowsky@wisconsin.gov or 608-335-0167

Screenshot of the main page of the TreeSnap app as seen on a mobile phone.

The main page of the TreeSnap app as seen on a mobile phone. / Photo Credit: TreeSnap.org

It takes more than a village to foster healthy forests. More than a township, a city and a county, too. Sometimes, even more than a state.

That’s why the Great Lakes Basin Forest Health Cooperative (GLB FHC) was formed four years ago by Holden Arboretum in Ohio and the U.S. Department of Agriculture Forest Service.

Geographically, the group’s region encompasses an area from New Jersey to Wisconsin. The Wisconsin Department of Natural Resources (DNR) is an active member.

Continue reading “Cooperative Enlists Public To Make Tree Health A Snap”

Forest Health and Climate Change Resources

By Carmen Hardin, Director, DNR Applied Forestry Bureau, Rhinelander;
Carmen.Hardin@wisconsin.gov

A graphic shows changing tornado risk trends in the United States from 1980 to 2020. All Wisconsin counties are showing an increase in tornado days.

A graphic shows changing tornado risk trends in the United States from 1980 to 2020. All Wisconsin counties are showing an increase in tornado days. / Map Credit: Inside Climate News, Stephen M. Strader et. al., Nature Magazine

We are often asked difficult questions about our forests, their health and how climate change is impacting them. Here is a curated collection of resources that may help you answer some of those questions. Continue reading “Forest Health and Climate Change Resources”

Treatment Of EAB Infestations In Yard Trees

By Abby Krause, DNR Urban Forestry Coordinator;
Abigail.Krause@wisconsin.gov or 608-556-5690

This summer’s detection of emerald ash borer (EAB) in Burnett County means our little metallic friend (or should I say foe?) is now known to be present in all 72 Wisconsin counties.

While EAB has been around for the better part of two decades in Wisconsin, many homeowners are still in the thick of dealing with the fallout of this invasive pest.

Continue reading “Treatment Of EAB Infestations In Yard Trees”

Forest Health Staff To Join Oak Disease Webinar

A screen grab of a webpage on the United States Environmental Protection Agency website discussing a pest management webinar set for Dec. 10, 2024.

The U.S. Environmental Protection Agency will present an international webinar titled “Deadly Oak Diseases” from 1 to 2:30 p.m. Tuesday, Dec. 10. / Graphic Credit: U.S. Environmental Protection Agency

By Michael Hillstrom, DNR Forest Health Specialist, Fitchburg;
Michael.Hillstrom@wisconsin.gov

The U.S. Environmental Protection Agency (EPA) will present an international webinar titled “Deadly Oak Diseases” from 1 to 2:30 p.m. (CST) Tuesday, Dec. 10.

Continue reading “Forest Health Staff To Join Oak Disease Webinar”

DNR Urban Forestry Grant Update

By Nicolle R. Spafford, DNR Urban Forestry Grants Manager; Nicolle.Spafford@wisconsin.gov or 715-896-7099

The 2025 Urban Forestry Grant application deadline was Oct. 1, 2024, and the Wisconsin Department of Natural Resources (DNR) received 67 applications, totaling over $1 million in funding requests. In total, $629,680 is available in grant funding for 2025. Continue reading “DNR Urban Forestry Grant Update”

Answering Common Emerald Ash Borer Yard Tree Questions

By Abby Krause, DNR Urban Forestry Coordinator; Abigail.Krause@wisconsin.gov or 608-556-5690

This summer’s detection of emerald ash borer (EAB) in Burnett County means our little metallic friend (or should I say foe?) is now known to be present statewide. While EAB has been around for the better part of two decades in Wisconsin, many homeowners are still in the thick of dealing with the fallout from this invasive pest. The management options for a handful of individual yard trees are quite different than dealing with ash in rural forests. Below is info to help with some frequently asked questions you may receive from residents, neighbors, family, friends and anyone else you may be known to as “that tree person.” Continue reading “Answering Common Emerald Ash Borer Yard Tree Questions”

Sustainable Forestry Initiative Urban Forest Improvement Grant Application Now Open

The Urban Forest Improvement Program, funded by the Inflation Reduction Act and the USDA Forest Service’s Urban and Community Forestry Program, provides grants to help organizations benchmark their urban or community forests against the Sustainable Forestry Initiative (SFI) Urban and Community Forest Sustainability Standard.

These grants support the assessment of current management practices, offering valuable insights into how sustainably these forests are managed and a roadmap of opportunities for improvement. Continue reading “Sustainable Forestry Initiative Urban Forest Improvement Grant Application Now Open”

Managing Veteran Trees In The Urban Environment

By Elton Rogers, DNR Urban Forestry Coordinator; Elton.Rogers@wisconsin.gov or 414-294-8675 and Dan Buckler, DNR Urban Forest Assessment Specialist; Daniel.Buckler@wisconsin.gov or 608-445-4578

Veteran trees, also known by some as heritage trees, loom large in our imagination. If you have an image of a large, gnarly oak in your head, you’re on the right track. These are the trees that, according to the International Society of Arboriculture, are of exceptional cultural, landscape or nature conservation value. They are vitally important and deserve management attention to keep them on the landscape whenever practical. Continue reading “Managing Veteran Trees In The Urban Environment”

Fourth Grade Arbor Day Orders Now Available

Do you remember when you were in fourth grade? Did you receive a tree seedling to plant for Arbor Day?

Wisconsin Department of Natural Resources (DNR) nurseries have been giving away free seedlings to celebrate Arbor Day since 1984 – over two million seedlings across the state. Every fourth-grade student in Wisconsin is eligible to receive a free tree seedling from DNR nurseries to complement Arbor Day celebrations. Continue reading “Fourth Grade Arbor Day Orders Now Available”