Got Nature? Blog

Hoosier Ag Today: White-tailed deer are very important to Indiana woodlands. But in many areas of the state, deer populations have grown far beyond what the land can support.

“Through their browsing and what they eat, they can actually reduce plant diversity and limit the growth of some of our tree seedlings, such as Oak, which are both economically and ecologically important,” says Jarred Brooke, Purdue Extension Wildlife Specialist.

“They can actually cause issues with increases in the invasive species that they don’t eat, like Japanese stilt grass or garlic mustard,” he says.

For woodland owners across Indiana who might not be sure if deer are even a problem on their property, how can they better understand and measure deer impacts?

“I think the first step is being aware and being tuned in to the problems that deer can cause,” he says. “Fortunately, with the help of The Nature Conservancy here in Indiana, we at Purdue Extension created a series of publications and videos called the Deer Impact Toolbox, which are designed to help landowners really understand, monitor, and address the impacts that deer have in their woodlands. These resources are a great starting point for any landowner that is interested in learning more about deer impacts.”

He adds that the best way to manage those impacts from deer are hunting, habitat management, and plant protection.

“Through the reduction of the number of deer by harvesting does on your property, that can be an effective way to reduce their impact,” he says. “Also if you can improve the habitat for deer on your property, either through forest improvement or through a timber harvest, you can actually create more food on the landscape, which reduces overall dear impact.

“The last big way is through protecting the plants that you’re trying to keep deer from browsing. That can be fencing, tree plantations, putting tree tubes or tree shelters on young trees, or fencing sensitive areas from deer browsing,” he says.

Read the Deer Toolbox Publications: Deer Impact Toolbox.

View the original article and listen to the Hoosier Ag Today’s radio News in the Hoosier Ag Today April 2025: Managing the Impact of White-tailed Deer on Indiana Woodlands.

Resources:
Purdue Extension Pond and Wildlife Management
Ask an Expert: Wildlife Food Plots, video, Purdue Extension – FNR YouTube Channel
How to Build a Plastic Mesh Deer Exclusion Fence, The Education Store
A Woodland Management Moment – Deer Fencing, Purdue Extension – FNR YouTube Video
Managing Your Woods for White-Tailed Deer, The Education Store
Bovine Tuberculosis in Wild White-tailed Deer, The Education Store
Handling Harvested Game: Episode 1, Field Dressing, video, Purdue Extension – FNR YouTube Channel
Deer Harvest Data Collection, Got Nature? Blog, Purdue Extension – FNR
How to Score Your White-tailed Deer, video, Purdue Extension
White-Tailed Deer Post Harvest Collection, video, Purdue Forestry and Natural Resources
Age Determination in White-tailed Deer, video, Purdue Extension
Handling Harvested Deer Ask an Expert? video, Purdue Extension – FNR YouTube Channel
Subscribe to Purdue Extension-Forestry & Natural Resources YouTube Channel, Wildlife Playlist

Jarred Brooke, Wildlife Extension Specialist
Purdue Department of Forestry and Natural Resources

Hoosier Ag Today

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The Hardwood Tree Improvement & Regeneration Center (HTIRC) continues to share top forest research as scientists, experts and partners further the mission of tree improvement, management, and protection of hardwood forests. The most recent HTIRC Annual Report is now available and includes research, personnel and outreach news:

• NSF Center for Advanced Forestry System Updates, the only forestry-based National Science Foundation (NSF) Industry/University Cooperative Research Center (I/UCRC)
• Funded Research Grants which includes Backpack System for High Resolution Forest Inventory, Testing Efficacy of Enrichment Plantings for Stand Regeneration in Hardwood Forests, Better Black Walnut by Breeding Without Breeding and much more.
• Creating a Directory, Depository and Database for Historical Genetic and Tree Improvement Trials
• HTIRC Partners with Tree Pro to Distribute Hardwood Seedlings
• Institute of Digital Forestry
• 2024 Tree Improvement Report

If you would like to subscribe and receive the e-newsletter visit HTIRC e-Newsletter.

The mission of the HTIRC is to advance the science and application of tree improvement, management, and protection of hardwood forests, with emphasis in the Central Hardwood Forest Region (CHFR). They seek to develop research and technology-transfer programs that provide knowledge focused on the establishment and maintenance of sustainable, genetically diverse native forests and the development of highly productive woodlands that provide a wide array of products and services.

Other resources:
Forestry & Natural Resources
Tropical HTIRC
An Introduction to Trees of Indiana, The Education Store, Purdue Extension resource center
Native Trees of the Midwest, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
ID That Tree, Playlist, Subscribe to Purdue Extension – Forestry and Natural Resources YouTube Channel
A Woodland Management Moment, Playlist, Purdue Extension – FNR YouTube Channel
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store
Finding help from a professional forester, Indiana Forestry & Woodland Owners Association
District Forester, Indiana DNR Division of Forestry, for over 10 acres of woodlands
Directory of Professional Foresters, Indiana Forestry & Woodland Owners Association (IFWOA)

Matthew Ginzel, Professor and Director of HTIRC
Purdue Entomology
Purdue University Department of Forestry and Natural Resources
Hardwood Tree Improvement and Regeneration Center (HTIRC)

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Congratulations to Liz Jackson, FNR Extension Specialist, on receiving the 2025 Indiana Hardwood Lumbermen’s Association (IHLA) President’s Award. This award is given for exceptional contribution to the forest products industry and to members of IHL. We are proud to celebrate her achievements along with seeing her featured in the April 2025 edition of the Agriculture & Natural Resources (ANR) newsletter.

Agricultural & Natural Resources (ANR) Newsletter: Liz has worked as an Extension specialist associated with three forestry organizations since March 2004. Liz obtained her BS in forest products (’82) from Purdue’s Forestry & Natural Resources Department and MS in business management (’84) from Krannert School of Business under a special forestry/business master’s program.

Before coming to Purdue Extension, Liz spent 15 years in wood products manufacturing as a plant manager at Aristokraft cabinets (now MasterBrand) and purchasing and inventory control manager at Lafayette Venetian Blind.

Liz’s Extension role is to provide programs and products on sustainable forest management and forest stewardship to address woodland owners’ concerns and needs. While representing the Department of Forestry and Natural Resources, she works on behalf of three organizations.

The Hardwood Tree Improvement and Regeneration Center (HTIRC) is a research partnership between Purdue FNR and the USDA Forest Service focusing on management, protection and improvement of fine hardwood species. For the HTIRC she coordinates annual meetings, research conferences and educational programs.

For the Indiana Forestry & Woodland Owners Association (IFWOA) and National Walnut Council, she represents the interests of the members and manages all business of the associations, including board meetings, annual conferences and education programs, membership and finances, and communications, including newsletters, websites and social media.

Liz is involved in many partnerships around the state, including as a member of the Extension Invasive Species Working Group, on the editorial board for Indiana Woodland Steward newsletter, member of NRCS state technical committee, and advisory partner with Indiana DNR Division of Forestry Forest Stewardship Committee, Sentinel Landscapes, and Let the Sun Shine In Indiana programs.

A highlight of her career was traveling to Washington, D.C., in 2005 to see Sen. Richard Lugar of Indiana and representatives from HTIRC and Indiana forestry plant an Indiana walnut tree on the U.S. Capitol grounds. Ten years later she returned to the site and was thrilled to find the tree and see it was thriving.

Resources:
Indiana Forestry & Woodland Owners Association (IFWOA) YouTube Channel
Observing Seasonal Changes in Nature Webinar with Amanda Wanless, IFWOA YouTube Channel
Magnificent Trees of Indiana Webinar with Author Carroll Ritter, IFWOA YouTube Channel
Ask the FNR Expert: Pests in your Woods, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Woodland Stewardship for Landowners, Playlist, Purdue Extension – FNR YouTube Channel
Directory of Professional Foresters, Indiana Forestry & Woodland Owners Association (IFWOA)
Indiana Woodland Steward E-newsletters, Eleven Member Organization
Invasive Species, Playlist, Purdue Extension – FNR YouTube Channel
Invasive Plant Species Identification, Video, Purdue Extension – FNR YouTube Channel
Subscribe – Purdue Extension-FNR YouTube Channel

Agricultural & Natural Resources (ANR), Purdue Extension

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Join Purdue Extension forester Lenny Farlee in this episode of “A Woodland Management Moment” as he explores the unique ecosystem of bottomlands. These flat, moisture-rich environments are home to a diverse array of species, shrubs, and trees. Watch the video to discover the key features and characteristics of these fascinating sites.

 

If you have any questions regarding trees, forests, wildlife, wood products, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources:
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
The Nature of Oaks Webinar, Purdue Extension-FNR YouTube Channel, Shared from Indiana Forestry & Woodland Owners Association
Conservation Tree Planting: Steps to Success, Purdue Extension – FNR YouTube Channel
Shrubs and Woody Vines of Indiana and the Midwest, Purdue University Press
Native Trees of the Midwest, Purdue University Press
ID That Tree, Playlist, Purdue Extension – FNR YouTube Channel
Investing in Indiana Woodlands, The Education Store
Woodland Stewardship for Landowners Video Series, Playlist, Indiana Department of Natural Resources YouTube Channel
Ask an Expert: Tree Selection and Planting, Purdue Extension – FNR YouTube Channel
Forest Improvement Handbook, The Education Store
Find an Indiana Professional Forester, Indiana Forestry & Woodland Owners Association (IFWOA)
Purdue Arboretum Explorer

Lenny Farlee, Extension Forester
Hardwood Tree Improvement and Regeneration Center
Purdue Department of Forestry & Natural Resources

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Purdue Landscape Report: These oak trees are showing the symptoms of smooth patch ( see below Figures 1, 2, 3).  This condition is the result of a fungal infection that is restricted to the outer bark, causing it to slough off. The bark layer remaining is smoother and lighter in color than uninfected, normal bark.

Patches can vary from a few inches to a foot or more in diameter and may occur on branches as well as the trunk.  Several fungi can cause this condition. A common species, Aleurodiscus oakesii, produces clusters of flat, disc-like spore-bearing structures on the surface of the smooth bark. These structures are gray or beige in color and are usually less than 1⁄2 inch in diameter (Figure 4).

The best time to see this interesting phenomenon in the forest is during wet periods in late winter before new spring growth begins, when the light gray bark stands out in the light penetrating the canopy. The fungal structures shrink when dry so will be more apparent following rainy weather.

 

The fungal structures may be mistaken for wood decay fungi, but because smooth patch fungi invade only the nonliving, outer bark tissues, they do not affect the health of the tree. No control measures are needed.

 

The fungal structures may be mistaken for wood decay fungi, but because smooth patch fungi invade only the nonliving, outer bark tissues, they do not affect the health of the tree. No control measures are needed.

Resources:
Indiana Forestry & Woodland Owners Association (IFWOA) YouTube Channel
District Forester, Indiana DNR Division of Forestry, for over 10 acres of woodlands
Directory of Professional Foresters, Indiana Forestry & Woodland Owners Association (IFWOA)
Indiana Woodland Steward E-newsletters, Eleven Member Organization
The Nature of Oaks Webinar, Purdue Extension-FNR YouTube Channel, Shared from Indiana Forestry & Woodland Owners Association
Purdue Arboretum Explorer
Native Trees of the Midwest, Purdue University Press
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Conservation Tree Planting: Steps to Success, Purdue Extension – FNR YouTube Channel
Forest Improvement Handbook, The Education Store
Woodland Stewardship for Landowners, Playlist, Purdue Extension – FNR YouTube Channel
ID That Tree – Video Playlist, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Invasive Species, Playlist, Purdue Extension – FNR YouTube Channel
Invasive Plant Species Identification, Video, Purdue Extension – FNR YouTube Channel
Report Invasive Species, Purdue Invasive Species
Subscribe – Purdue Extension-FNR YouTube Channel

Tom Creswell, Plant & Pest Diagnostic Laboratory Director
Purdue Botany and Plant Pathology

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Indiana Forestry & Woodland Owners Association (IFWOA) News: If you live in Indiana and own more than ten acres of woodlands, then you may want to enroll in the Classified Forest and Wildlands Program offered through the Indiana Department of Natural Resources (DNR), Division of Forestry. This program encourages timber production, watershed protection, and wildlife habitat management on private lands in Indiana. Program landowners receive a property tax reduction in return for following a professionally written management plan. In addition to the tax incentive, landowners receive free technical assistance from DNR foresters and wildlife biologists, priority for cost-share to offset the cost of doing management, and the ability to “green” certify their forests. The minimum requirement for program enrollment is 10 acres of forest, wetland, shrubland, and/or grassland.

“Once enrolled in our program, you get a reduced property tax assessment,” says Gretchen Herbaugh, District Forester with Indiana DNR serving southwestern Indiana.

“Property can be anything from forest ground to native grasses to pollinator habitats to wildlife food plots—we span a large range of habitat types and management styles,” Herbaugh says.

For full IFWOA article view: Indiana DNR Offers a Special Program for Woodland Owners.

To learn more about the program with more resources view the Hoosier Ag Today article, Indiana DNR Offering a Special Program for Woodland Owners.

Resources:
Subscribe, IFWOA YouTube Channel (includes The Nature of Oaks, Be Tick Aware, Population Ecology of Deer and more)
Find an Indiana Professional Forester, Indiana Forestry & Woodland Owners Association (IFWOA)
Purdue Arboretum Explorer
Native Trees of the Midwest, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store
ID That Tree, Purdue Extension-Forestry & Natural Resources (FNR) YouTube playlist
Woodland Management Moment , Purdue Extension-FNR YouTube playlist
District Foresters for 10 plus acres, Indiana Department of Natural Resources
Financial and Tax Aspects of Tree Planting

Diana Evans, Extension and Web Communication Specialist
Purdue University Department of Forestry and Natural Resources

Liz Jackson, Engagement Lead
Indiana Forestry & Woodland Association (IFWOA)

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Join Purdue Extension forester Lenny Farlee and wildlife specialist Brian MacGowan as they help you prepare for the holidays while keeping your family and local wildlife safe. This video discusses everything from how to choose and care for a real Christmas tree as well as what to do with it after the season and also how to make wildlife/nature-friendly decorations.

Topics Include:
– What can I do with my tree after Christmas that would benefit wildlife?
– Are artificial structures legal in Indiana lakes?
– What types of items can I collect from the wild for holiday decorations?
– How do I do it in an environmentally responsible way?
– Are there some things I shouldn’t or can’t collect?
– What outdoor holiday decorations can benefit wildlife?
– How do I make it last longer?
– Can I avoid problems with non-target wildlife?

If you have any questions regarding trees, forest management, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Selecting an Indiana-Grown Christmas Tree, The Education Store, Purdue Extension resource center
Tips for First-Time Buyers of Real Christmas Trees, The Education Store
Indiana Christmas Tree Growers Association
Purdue University Invasive Species resources
Indiana DNR Division of Fish and Wildlife for wildlife possession rules
Feed the birds with a DIY wreath, Audubon
Dan Cassens: Tips for First-Time Christmas Tree Buyers, Video, Purdue Agriculture
Dan Cassens: Starting Your Own Christmas Tree Farm, Video

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resource

Brian MacGowan, Extension Wildlife Specialist
Department of Forestry & Natural Resources, Purdue University

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Agricultural & Natural Resources (ANR) Newsletter: Since joining the faculty at Purdue in 1997, Rado Gazo, a professor of wood processing and industrial engineering, has educated students, industry professionals and the general public about the possibilities of the wood products industry.

In addition to teaching undergraduate courses in Properties of Wood, Wood Products Manufacturing and Furniture Design for CNC Manufacturing, Gazo conducts research focused on evaluating tree, log and lumber quality using CT (X-ray computed tomography), laser and image scanning and related manufacturing. He also investigates the competitiveness of furniture manufacturers as well as the application of industrial engineering techniques to value-added wood products manufacturing.

In 2020, Gazo created Hardwood University, a self-sustaining collaborative program with the Indiana Hardwood Lumbermen’s Association, which aims to provide hardwood industry professionals and landowners in the Central Hardwood region with cutting-edge information and training. Gazo is one of the primary instructors for the program.

Hardwood University, which consists of 10 sessions annually, is intended for new employees in the hardwood industry as well as those preparing for advancement or cross-training. The program, which takes place monthly at various Indiana hardwood plants and Purdue agricultural centers, offers informational and technical sessions on topics ranging from forest taxation to tree and log scaling and grading; log bucking; marketing hardwood veneer, stave and sawlogs; grade-sawing lumber; air drying and kiln drying lumber; hardwood lumber grading; lean manufacturing and logistics; and sawmill efficiency and quality control.

In addition, Gazo has worked with nearly 300 companies, providing technical assistance, troubleshooting and consulting services as well as implementation of manufacturing best practices.

To learn more about Rado Gazo’s work view: Rado Gazo, Forestry and Natural Resources profile page.

To read the rest of the newsletter and view the original article, see the ANR November 2024 Newsletter.

Resources:
Wood Products Manufacturing Technology Minor, FNR Minor
Hardwoods of the Central Midwest, The Purdue Arboretum
Wood Products, Purdue Extension – Forestry & Natural Resources (FNR)
Wood is Best Video, Forestry and Natural Resources YouTube Channel, Woodisbest.org
An Introduction to Trees of Indiana, The Education Store, Purdue Extension resource center
Native Trees of the Midwest, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
ID That Tree, Playlist, Subscribe to Purdue Extension – Forestry and Natural Resources YouTube Channel
A Woodland Management Moment, Playlist, Purdue Extension – FNR YouTube Channel
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store
Finding help from a professional forester, Indiana Forestry & Woodland Owners Association
District Foresters for 10 plus acres, Indiana Department of Natural Resources
Hardwood Tree Improvement & Regeneration Center (HTIRC)

Agricultural & Natural Resources (ANR), Purdue Extension

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Wild Bulletin, IN DNR, Division of Fish & Wildlife: Epizootic hemorrhagic disease (EHD) is a naturally occurring viral disease commonly seen in the Indiana deer herd. Each year, typically in late summer, Indiana DNR receives reports of deer displaying signs of EHD throughout the state.

This year, DNR confirmed a significant EHD outbreak that began in the northern region of the Hoosier State. In some years, EHD can affect a larger-than-normal portion of the deer and becomes widespread across a county. In those instances, DNR lowers the County Bonus Antlerless Quotas (CBAQs) in the impacted counties to offset the effect of the counties’ EHD outbreak on the deer herd in that region.

EHD is transmitted by biting midges, also known as sand gnats or “no-see-ums.” Deer infected with EHD may display unusual behaviors such as lethargy, excessive salivation, or disorientation. EHD also causes fever in deer, which can cause deer to seek water. As a result, many deer that die from EHD are found in or near open water sources like ponds and rivers. Anyone who finds a deer showing signs of EHD or dead in water is asked to report it at on.IN.gov/sickwildlife.

County bonus antlerless quotas reduced in three counties for 2024-25
Due to the number of reported deer mortalities and extent of EHD in the region, DNR has lowered the County Bonus Antlerless Quotas (CBAQs) in Wabash, Porter, and Allen counties from two bonus antlerless deer to one to help offset the effects of EHD on the deer herd in that region. During the winter, DNR biologists will fully evaluate the effects of EHD and will propose changes to bag limits as required. Hunters can stay informed about CBAQ changes at on.IN.gov/EHD-quotas.

To find out more view the Indiana Department of Natural Resources EHD Antlerless Bonus Quota Reductions.

Resources:
Be on the Watch for Epizootic Hemorrhagic Disease (EHD) in Deer, Got Nature? Blog, Purdue Extension – FNR
Report a Sick or Dead Deer, Indiana Department of Natural Resources (IN-DNR)
EHD Virus in Deer: How to Detect and Report video, Quality Deer Management Association
Epizootic Hemorrhagic Disease (pdf),  Cornell University
How to Score Your White-Tailed Deer video, Purdue Extension – FNR YouTube Playlist
Deer Harvest Data Collection, Purdue FNR Got Nature? blog
Woodland Stewardship for Landowners: Managing Deer Damage to Young Trees, Purdue Extension-FNR YouTube Channel
Introduction to White-tailed Deer Impacts on Indiana Woodlands, Deer Impact Toolbox, Got Nature? Blog & The Education Store
Purdue Extension Pond and Wildlife Management
Managing White-tailed Deer Impacts on Indiana Woodlands, The Education Store
How to Build a Plastic Mesh Deer Exclusion Fence, The Education Store
Managing Your Woods for White-Tailed Deer, The Education Store
Deer Harvest Data Collection, Got Nature? Blog, Purdue Extension – FNR
Handling Harvested Deer Ask an Expert? video, Purdue Extension – FNR YouTube Channel
Subscribe to Purdue Extension-Forestry & Natural Resources YouTube Channel, Wildlife Playlist
A Woodland Management Moment – Deer Fencing, Purdue Extension – FNR YouTube Video

Division of Fish and Wildlife, Indiana Department of Natural Resources

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Purdue Landscape Report: We have received a few elm tree samples this year with a disease we do not often see, but which is relatively common: black spot of elm. This disease, also called elm anthracnose, is caused by the fungus Stegophora ulmea and can affect most species of elm with American elm varieties being more susceptible.

The fungus becomes active in the spring at temperatures of 45 deg F or above. It can release spores that will infect newly unfolding leaves leading to chlorotic leaf spots or blotches on the upper leaf surface. Black fungal fruiting bodies will develop within the affected tissue, making it seem like the leaves have been dotted with tar. These fungal structures are raised and will give the leaf a bumpy texture. As more spots develop and coalesce, they will create white areas of dead tissue that can eventually turn brown.

The black fungal stromata can produce asexual spores (conidia) which can cause new infections during the growing season. Conidia are produced in a mucilage which becomes loose in humid conditions and can be spread by water splash (rain or irrigation). While leaf infections are the most commonly observed symptom, Stegophora can also infect leaf petioles and twigs. Premature leaf drop due to severe leaf spotting can occur, but significant defoliation may also develop when petioles are infected. Stem infections can lead to shoot blighting and small limb dieback.

Black spot is generally worse when the weather is cool and moist over an extended period of time. The fungus can reinfect the tree throughout the season during rainy. When the summer turns hot and dry, disease development will slow down and trees with twig blighting may show some recovery by pushing out new growth from dormant buds below affected shoots. Please note that twig blighting may look similar to flagging branches associated with Dutch elm disease (DED), so we recommend pruning off the branch and looking for internal vascular streaking to rule out DED.

Fungicides are not normally recommended to manage this disease for mature trees in landscapes since it is impractical to get full coverage of the foliage and damage is not usually severe. However, preventative applications may be warranted in nursery settings when the disease is severe to protect new growth and slow down disease spread until drier weather occurs, especially where overhead irrigation is used. Raking up leaf litter and pruning out infected stems will remove inoculum for the following season and help prevent existing infections from spreading.

Click here for more information on Dutch elm disease and view this original article here: A New Threat to Elms in North America

Subscribe and receive the newsletter: Purdue Landscape Report Newsletter.

Resources:
Intro to Trees of Indiana: American Elm, Got Nature? Blog, Purdue Extension – FNR
Intro to Trees of Indiana: Slippery Elm, Got Nature? Blog, Purdue Extension – FNR
ID That Tree, Playlist, Red Elm, Siberian Elm, Winged Elm, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Invasive Species Playlist, Playlist, Purdue Extension – FNR YouTube Channel
A Woodland Management Moment, Playlist, Purdue Extension – FNR YouTube Channel
Woodland Stewardship for Landowners, Playlist, Purdue Extension – FNR YouTube Channel
Indiana Department of Natural Resources: Invasive Species
Indiana Invasive Species Council
Cooperative Invasive Species Management Area (CISMA)
Report Invasive, Purdue Extension
Episode 11 – Exploring the challenges of Invasive Species, Habitat University-Natural Resource University
What are invasive species and why should I care?, Got Nature? Blog, Purdue Extension – FNR
Native Trees of the Midwest, The Education Store
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store

John Bonkowski, Lead Extension Administrator
Purdue Department of Botany and Plant Pathology

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