Publications

DNR Participates In Beech Leaf Disease Detection Survey

Map of Wisconsin

A Wisconsin map showing results of a beech leaf disease survey that ran from 2023 to 2026. / Graphic Credit: Wisconsin DNR

By Art Kabelowsky, DNR Forest Health Communications, Fitchburg;
Arthur.Kabelowsky@wisconsin.gov; 608-335-0167

To date, there have been no confirmed discoveries of beech leaf disease (BLD) in Wisconsin landscape, and we are on the lookout for this disease.

The disease is primarily found on American beech (Fagus grandifolia) but can also be found on ornamental species like European, Oriental, and Chinese beech (F. sylvatica, F. orientalis, and F. engleriana). Although it has not yet been found in Wisconsin, recent discoveries of the disease in Michigan and other states highlight the continued importance of monitoring BLD’s expansion.

Continue reading “DNR Participates In Beech Leaf Disease Detection Survey”

Forest Health Team Debuts Two New Fact Sheets

An image of the front page of a DNR fact sheet.

The front page of the Wisconsin DNR’s new Forest Health Fact Sheet on oak decline. / Graphic Credit: Wisconsin DNR

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

The Wisconsin Department of Natural Resources Forest Health team has published two new fact sheets, bringing the total count of its fact sheet offerings to 26.

The new fact sheets:

  • Fall Webworm: DNR Publication FR-622u discusses basic information on the biology of the insect (Hyphantria cunea), its life cycle, potential lookalike caterpillars and management options.
  • Oak Decline: DNR Publication FR-622v covers the tricky topic of oak decline, which is not caused by one distinct forest pest or problem but instead is the result of multiple factors — some predisposing, some inciting and some contributing — that work in combination to cause decline.

The fact sheets are designed in full color, with photos, and are meant to be printed out for reference or to carry into the field. They can also be viewed online. They can be printed on standard letter-sized paper. Most fact sheets are two pages, meant for two-sided printing; a few are four-page documents.

A complete directory of links to all DNR Forest Health fact sheets is available online.

New Publication Highlights Perception Of Urban Wood Product Markets

LOGOA new U.S. Forest Service publication, Urban Residential Landowner Interest in Emerging Urban Wood Product Markets: Results from a Multi-City Survey, provides new insight into how homeowners across the United States engage with and perceive urban wood products and markets. The study highlights both the scale of urban wood resources and the opportunities to better utilize material that is often discarded as waste.

The research examined responses from residential landowners in six U.S. cities to better understand participation in urban wood systems and interest in urban wood products. Findings showed that approximately 15% of respondents had previously purchased or acquired urban wood products, demonstrating that a meaningful segment of urban residents is already participating in these emerging markets.

Interest was strongest for lower-value products such as mulch, wood chips, and compost, while products such as lumber and furniture generated lower—but still notable—levels of interest. The study also found that homeowners rely heavily on private-sector professionals, including landscaping and tree care companies, as well as friends and family, for trusted information related to tree care and wood utilization. Government agencies and nonprofit organizations were viewed as less influential information sources.

The publication underscores the significant opportunity to expand urban wood utilization efforts nationwide. Over the past two decades, urban tree removals have generated volumes of wood that exceed annual harvests from the U.S. National Forest System, yet much of this material continues to enter the waste stream. Strengthening local urban wood economies could support landfill diversion, create new business opportunities, encourage sustainable material use, and increase public awareness of the value of urban forests.

As one of the largest surveys of urban wood perceptions and practices conducted to date, the publication establishes an important baseline for future research, outreach, and market development efforts aimed at increasing participation in urban wood economies.

For more information on this study please visit: Urban Residential Landowner Interest in Emerging Urban Wood Product Markets: Results from a Multi-City Survey | US Forest Service Research and Development

The 21st Century Brings Changes To The Hardwood Lumber Industry

A pile of freshly processed hardwood timber.

Hardwood lumber being stacked after processing. / Photo Credit: M. Bumgardner

By Matthew Bumgardner and Scott Bowe

Hardwood lumber production in the United States reached a peak in 1999, with an estimated 12.6 billion board feet of output. However, the early 2000s ushered in a major structural shift – the large-scale offshoring of U.S. furniture manufacturing. Once the single largest user of hardwood lumber until the late 1970s, wood furniture has become the smallest major market for hardwood lumber today.

Continue reading “The 21st Century Brings Changes To The Hardwood Lumber Industry”

Log Into Safety: The Free Digital ANSI Z133 Updates Are Almost Here!

By Brian Wahl, DNR Urban Forestry Coordinator
Brian.Wahl@wisconsin.gov or 608-225-7943

What is the ANSI Z133, and why should you care?

man cutting a branch with a chainsawThe American National Standards Institute (ANSI) Z133, more affectionately known at “The Z”, is the standard that contains arboriculture safety requirements for pruning, repairing, maintaining and removing trees, cutting brush and using equipment in such operations. If you’re reading this newsletter, you, your staff or your contactors likely participate in work that falls under the purview of this standard. Continue reading “Log Into Safety: The Free Digital ANSI Z133 Updates Are Almost Here!”

Community Spotlight: Tree Canopy Cover On Milwaukee School Properties

By Dan Buckler, DNR Urban Forest Assessment Specialist
Daniel.Buckler@wisconsin.gov or 608-445-4578

The thought of increasing a community’s tree canopy cover is sometimes overwhelming given how many landowners are present. Think about all the stakeholders who have to buy into the initiative, not only with enthusiasm, but likely contributing money and time as well.

Contrast that with a more actionable approach focused on areas where there’s a single landowner or manager.

This was the route taken by graduate student Michelle Hess in a recent paper for a UW-Milwaukee Geography course. Michelle investigated tree canopy on Milwaukee Public Schools (MPS) properties to identify which schools should be prioritized for future greening initiatives, like those organized through ReFlo. The goal was to use canopy data provided by the DNR, identify which schools had lower canopy cover, merge those data with median household income of the local Census tract and come up with a prioritized list of schools in need of tree planting. Continue reading “Community Spotlight: Tree Canopy Cover On Milwaukee School Properties”

Yard Tree Owners, Send In Your Questions

The niversity of Wisconsin-Madison Division of Extension Horticulture Program's webpage for "Ask A Gardening Question."

The University of Wisconsin-Madison Division of Extension Horticulture Program’s webpage for “Ask A Gardening Question,” the best place for homeowners to ask questions about the health of their yard trees. / Graphic Credit: UW-Madison Division of Extension

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

The Wisconsin Department of Natural Resources (DNR) has a team of Forest Health specialists that focus on problems affecting state, county and municipal forests and private forests larger than 10 acres.

But, to twist a cliché, if you can’t see the forest for the trees when it comes to your yard trees, expert help is a few clicks away.

Continue reading “Yard Tree Owners, Send In Your Questions”

Stilt Grass StoryMap Updated For 2026

Main page of the Wisconsin DNR's StoryMap on Japanese stilt grass.

The main page of the Wisconsin Department of Natural Resources’ StoryMap titled “Japanese Stilt Grass on the Coulee Experimental State Forest.” / Graphic Credit: Wisconsin DNR

By Carter Hellenbrand, DNR Invasive Plant Field Specialist, Fitchburg
Carter.Hellenbrand@wisconsin.gov

The Wisconsin Department of Natural Resources (DNR) Forest Health program has updated the Japanese stilt grass StoryMap to reflect all the work completed in 2025. The StoryMap documents the history of this invasive species on the Coulee Experimental State Forest in La Crosse County.

A StoryMap is a web-based content creation and communication tool that allows creators to share maps, apps and multimedia in the context of a narrative. Users can see an overview of Japanese stilt grass, how to identify it and what control efforts have been implemented since the plant was first detected in Wisconsin in 2020.

Continue reading “Stilt Grass StoryMap Updated For 2026”

Oak Wilt Information Updated

University of Wisconsin-Madison Extension online tool to help with oak wilt decisions.

A University of Wisconsin-Madison Extension online tool provides users localized information about the estimated emergence status of the two most important insects that transmit oak wilt in Wisconsin. / Graphic Credit: University of Wisconsin-Madison Extension

By Kyoko Scanlon, DNR Forest Pathologist, Fitchburg
Kyoko.Scanlon@wisconsin.gov

In 2025, oak wilt was detected for the first time in Hughes Township, Bayfield County, a northern Wisconsin location where oak wilt remains uncommon. There were no new county finds in 2025.

Based on the findings in 2025, the maps in the Oak Harvesting Guidelines To Reduce The Risk Of Introduction And Spread Of Oak Wilt (the oak wilt guidelines), oak wilt fact sheet and were updated. The maps in the oak wilt guidelines are good through the end of 2026.

Continue reading “Oak Wilt Information Updated”

Wisconsin’s Urban Forestry Council 2025 Biennial Report Published

By Jenn Janness, Urban Forestry Council Liaison
Jennipher.Janness@wisconsin.gov or 920-809-9330

2025 report coverThe purpose of the Wisconsin Urban Forestry Council is to advise the state forester and the Wisconsin DNR on the best ways to preserve, protect, expand and improve Wisconsin’s urban and community forest resources. Members are appointed by the DNR Secretary and represent a wide array of stakeholders, including municipal and utility foresters, medical and higher education professionals, nursery and green industry staff, environmental groups, public works and parks staff, organizations such as the Wisconsin Arborist Association (WAA), the Urban Wood Network Wisconsin, the League of Wisconsin Municipalities and government agencies such as WisDOT and DATCP. Continue reading “Wisconsin’s Urban Forestry Council 2025 Biennial Report Published”