Got Nature? Blog

MyDNR, Indiana’s Outdoor Newsletter: We need the public’s help to update The Big Tree Registry, a list of the largest known specimen of each native tree species in Indiana.

“Indiana’s currently tallest recorded tree is a 152-foot-tall bitternut hickory, and our widest tree circumference is a silver maple at more than 361 inches,” said Jacob Roos, DNR urban forestry director. “We need help getting out across the state to find our new record-setting trees.”

That means it’s time to review the recently updated champions list and start looking for new candidates to nominate for the list, which is maintained by DNR’s Division of Forestry.

Three measurements are required:
• trunk circumference, in inches, at 4 1/2 feet above the ground;
• total height, in feet;
• and average crown spread, in feet.

The total size of each tree nominated is calculated by adding the circumference and height to a quarter of the average crown spread.

The individual tree of each Indiana native tree species with the highest total points will be that species’ Big Tree champion. All nominations are reviewed, but only those with the highest scores will be verified.

To see full post please visit IN DNR, It’s Time to Start Looking for Big Trees.

To learn more please visit  The Big Tree Registry, IN DNR-Division of Forestry.

Sign up to receive the MyDNR Newsletter by email: MyDNR Email Newsletter

Resources:
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
Find an Arborist, International Society of Arboriculture
Planting Your Tree Part 1: Choosing Your Tree, Purdue Extension YouTube Channel
Native Trees of the Midwest, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, 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

Indiana Department of Natural Resources

---

Illinois-Indiana Sea Grant (IISG) Newsroom: At the recent Great Lakes Sea Grant Network meeting in Evanston, Illinois, Amy Shambach, Illinois-Indiana Sea Grant aquaculture marketing outreach associate, was presented with the 2023 Great Lakes Sea Grant Network Early Career Award.

Shambach has been in her role with IISG since 2019. Since then, she has developed numerous outreach products, including videos, factsheets, and websites. She has organized and led webinars and workshops in the two states and helped lead Great Lakes-wide projects.

Throughout her four years with the program, Shambach has worked closely with fish farmers—she has been someone they can turn to for guidance and information. As a result, she was able to help some farmers successfully secure federal support during COVID and then when an ice storm hit southern Illinois.

“It is unusual for someone to launch so many high-output, high-impact programs so early in their Sea Grant career, especially when they begin the job with little outreach experience,” said Stuart Carlton, IISG assistant director. “However, Amy is not usual, she is special, and is well deserving of recognition for her work.”
To see full article, please visit: Illinois-Indiana Sea Grant recognized for outstanding outreach efforts.

Amy provides outreach and extension services to producers, potential producers, and consumers, which is also shared through IISG partner Purdue Extension.

To view Amy’s publications and products, please visit Illinois-Indiana Sea Grant’s Resources Page.
For free downloads of the publications, view The Education Store, Purdue Extension’s resource center, and place “Amy Shambach” in the search field.

Resources:
Freshwater Prawn Farmed Fish Fact Sheet, The Education Store, Purdue Extension’s resource center
Largemouth Bass Farmed Fish Fact Sheet, The Education Store
Atlantic Salmon Farmed Fish Fact Sheet, The Education Store
A Guide to Small-Scale Fish Processing Using Local Kitchen Facilities, The Education Store
Walleye Farmed Fish Fact Sheet: A Guide for Seafood Consumers, The Education Store
Sustainable Aquaculture: What does it mean to you?, The Education Store
Center For Great Lakes Literacy (CGLL), Website
Scientists bring the Great Lakes to students learning from home, Got Nature? Blog
Aquaculture Industry in Indiana Growing, Purdue Today
Largemouth Bass Market Trends, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Ask An Expert: Hot and Cold, Video, Purdue Extension – FNR YouTube Channel
Video: Cage Culture and Aquaponics, FNR Youtube Channel
Eat Midwest Fish, Illinois-Indiana Sea Grant online resource hub

Illinois-Indiana Sea Grant (IISG)

 

---

Purdue Landscape Report: Many areas around the Midwest continue to creep towards an increasing drought situation.  Currently almost 80% of the Midwest is listed as being abnormally dry to exceptional drought.  Current soil moisture data indicates that most of the Midwest is very dry.  Going into the fall it’s very important to supply enough supplemental water (irrigation) to make up for the deficit prior to the landscape plants going dormant over the next six to eight weeks.

The fall is a very important time to limit stressors on landscape plants.  A stressed plant doesn’t produce as many secondary metabolites which aide in increased cold hardiness; so keeping your landscape plants irrigated during dry periods in late summer into fall is an important component of preparing plants for winter.

Remember some key steps concerning your landscape during extreme dry periods:

• Don’t wait until leaves begin dropping to start watering.
• Trees should receive the 5+5 rule.
  • 5 gallons, plus 5 gallons per caliper inch.

• Ideally watering should occur in the early morning to prevent foliar diseases.
• Mulching to 3” can conserve moisture and reduce temperature in the upper root zone.
• Watering during dry conditions will help prevent future insect, disease, and other stress issues going into the fall and the following year. In fact, plants going into the winter that are stressed due to water deficiency will reduce the cold hardiness and therefore will be more likely to suffer cold injury and/or death.
• If a plant isn’t receiving enough water, the amount of nutrient uptake will not be sufficient and will experience deficiency from nutrients the following year.

To view this full article and other Purdue Landscape Report articles, please visit Purdue Landscape Report.

Subscribe and receive the newsletter: Purdue Landscape Report Newsletter.

Resources:
Trees in Times of Drought​, Video, Purdue Agriculture
Drought Information​, Indiana Department of Natural Resources
Drought? Don’t forget the trees!, The Education Store
Safety Harvesting Quality Forage in a Drought, The Education Store
Planting Your Tree Part 1: Choosing Your Tree, Purdue Extension YouTube Channel
Tree Defect Identification, The Education Store
Tree Wound and Healing, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Surface Root Syndrome, The Education Store
Planning the Tree Planting Operation, The Education Store
Tree Risk Management, The Education Store
ID That Tree, Purdue Extension-FNR YouTube playlist
Subscribe – Purdue Extension-FNR YouTube Channel

Kyle Daniel, Commercial Landscape and Nursery Crops Extension Specialist
Purdue Horticulture & Landscape Architecture

---

Illinois-Indiana Sea Grant Newsroom: A group of Midwestern shrimp farmers are on a mission to provide Americans with better-tasting, sustainable shrimp. The industry struggled during the COVID-19 pandemic, but farmers remain hopeful that indoor shrimp farming will come back stronger than ever.

Experts say aquaculture, a method used to produce aquatic organisms in controlled conditions, can be a new market for farmers.

Though commercial shrimp farms came to the United States in the 1960s, about 90% of the shrimp Americans eat is still imported, said Amy Shambach, aquaculture marketing outreach associate for Illinois-Indiana Sea Grant.

As consumers start to prioritize sustainability and freshness when shopping for seafood, Shambach said inland shrimp farming can fill the need.

For full article and videos please visit Amy Shambach talks about the future of shrimp farming – IISG

About IISG: These are trying times for the environment. Climate change and other concerns such as population growth, aquatic invasive species, contaminated waters, and loss of natural habitat, the southern Lake Michigan region faces many challenges. Illinois-Indiana Sea Grant (IISG), with its unique mandate to bring the latest science to those who can best use the information, serves a critical role in empowering people to solve problems in sustainable ways. The program is funded through National Oceanic and Atmospheric Administration (NOAA), the University of Illinois and Purdue University, but IISG also works in partnerships with key organizations, institutions, and agencies in the region to reach more audiences and multiply opportunities for success. IISG brings together scientists, educators, policy makers, community decision makers, outreach specialists, business leaders, and the general public to work towards a healthy environment and economy.

Resources
Aquaculture Industry in Indiana Growing, Purdue Today
Farming Shrimp, and Changing the Industry, Far From an Ocean, article available by news service Aljazeera America
Video: Cage Culture and Aquaponics, FNR Youtube channel
Walleye Farmed Fish Fact Sheet: A Guide for Seafood Consumers, The Education Store, Purdue Extension resource center
Sustainable Aquaculture: What does it mean to you?, The Education Store
Fish: Healthy Protein Handout, The Education Store
The Benefits of Seafood Consumption The Education Store
Eat Midwest Fish, Illinois-Indiana Sea Grant online resource hub

Illinois-Indiana Sea Grant (IISG)

---

Purdue Landscape Report: When I was a kid, if you’d asked me what my favorite season was it would always immediately be summer. No school, time for playing outdoors, swimming, hiking, and late nights playing flashlight tag. Now, if I ranked the seasons from worst to best, they’d be Summer in last, followed by Winter (yes, I choose winter over summer), and a tie between Spring and Fall.  With the best temperatures, a mix of sun and rain/snow, and an explosion of colors from new blooms in the spring to the reds, yellows, and oranges of leaves before they drop in the fall, Spring and Fall are by far my favorite times of the year.  Well, we are nearly to the autumnal equinox with temperatures beginning to drop and the onset of some fall showers as I write this article. With Fall on the doorstep, I’ve received a repeated question recently, “Is it ok to plant a tree in the Fall?”

The short answer to this question is, “Yes!” If you want to add some new tree canopy to your yard, then pick your spot, choose the appropriate species, call #811 before you dig, and get that shovel out. Fall has some excellent reasons to plant trees, two of which I’ve already mentioned, cooler temps and autumn rains. While Autumn tends to be the driest time of the growing season, evapotranspiration rates are generally lower than during the summer season. These conditions reduce heat and water stress on trees (but are not an excuse to not mulch and water your new tree). Another good reason to plant in the fall as opposed to Spring is that instead of amping up for growing, trees are powering down and putting resources into root growth and storage. This means better establishment for the root system and a head start on protection for next year’s summer heat and drought.

There are some points to take into consideration, though. Again, make sure to properly water and mulch your new trees. They need an average of 5 gallons a week per inch of stem diameter if weekly rain isn’t providing around 1” of water. Be aware of when the first freeze is expected. You want to make sure your new trees have at least 6 weeks in the ground before the first freeze/frost and can stop watering after the first freeze. Also, for tree selection/protection, avoid broad leafed evergreen trees as they can be damaged by cold desiccation and wrap the trunks of your new trees to protect them from sunscald and animal damage like rubbing from bucks during the rut.

If you keep these points in mind and continue caring for your tree for the next 2-5 years you should have a successful planting. If you have any questions feel free to contact me at bmccalli@purdue.edu or you can find an ISA Certified Arborist at the following link Find an Arborist.

To view this full article and other Purdue Landscape Report articles, please visit Purdue Landscape Report.

Subscribe and receive the newsletter: Purdue Landscape Report Newsletter.

Resources:
The Purdue Landscape Report
Planning the Tree Planting Operation, The Education Store
Tree Risk Management, The Education Store
Tree Planting Part 2: Planting Your Tree, The Education Store
Planting Your Tree Part 1: Choosing Your Tree, Purdue Extension YouTube Channel
Summer Tree Care, Purdue Landscape Report
Tree Defect Identification, The Education Store
Tree Wound and Healing, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Surface Root Syndrome, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
Ask an Expert: Tree Selection and Planting, Purdue Extension-Forestry & Natural Resources (FNR) YouTube playlist
ID That Tree, Purdue Extension-FNR YouTube playlist
Subscribe – Purdue Extension-FNR YouTube Channel

Ben McCallister, Urban Forestry Specialist
Purdue Forestry & Natural Resources

---

Hunters have been busy preparing food plots, hanging tree stands and working on their marksmanship skills in hopes for getting that buck of a lifetime.  The Indiana deer hunting season for 2023-2024 started September 15th and goes to January 31st.  As your hunting adventures begin, Purdue Extension-Forestry and Natural Resources (FNR) has the resources you need. You will find How-To videos that address how to score your white-tailed deer, age determination,  how to harvest  your deer and many other deer management resources. The FNR videos and publications will give you step-by step guidance on how to receive accurate measurements and share best data collection practices, along with sharing what materials are needed.

Here is a quick list of just a few of our resources for those deer hunting enthusiasts:
Ask an Expert: Wildlife Food Plots, video, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Handling Harvested Game: Episode 1, Field Dressing, video, Purdue Extension – FNR YouTube Channel
Handling Harvested Game: Episode 2, Hanging & Skinning, video, Purdue Extension – FNR YouTube Channel
Handling Harvested Game: Episode 3, Deboning, video, Purdue Extension – FNR YouTube Channel
Handling Harvested Game: Episode 4, Cutting, Grinding & Packaging, video, Purdue Extension – FNR YouTube Channel
Deer Harvest Data Collection, Got Nature? Blog, Purdue Extension – FNR
How to Score Your White-tailed Deer, video, The Education Store, Purdue Extension Resource Center
White-Tailed Deer Post Harvest Collection, video, The Education Store
Age Determination in White-tailed Deer, video, The Education Store
Handling Harvested Deer Ask an Expert? video, Purdue Extension – FNR YouTube Channel
How to Build a Plastic Mesh Deer Exclusion Fence, The Education Store
Bovine Tuberculosis in Wild White-tailed Deer, The Education Store
Woodland Stewardship for Landowners: Managing Deer Damage to Young Trees, video, Purdue Extension – FNR YouTube Channel
Integrated Deer Management Project, Purdue FNR

For other hunting and trapping dates view the Indiana Department of Natural Resources, Fish and Wildlife Department website. Enjoy and stay safe!

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

Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources

Jarred Brooke, Wildlife Extension Specialist
Purdue Forestry and Natural Resources

---

Purdue Landscape Report: Many trees are planted for their beautiful fall color, especially in locations where the climate provides reliable autumn weather. I have said this multiple times during extension talks and conversations with submitters to the Purdue Pest & Plant Diagnostic Lab (PPDL), but I seem to have not experienced a ‘normal’ fall since moving to Indiana with how erratic the weather has been from year to year. Depending on weather conditions, such as high heat and drought, colors may develop early or may be duller for specific varieties than expected.

However, individual trees that begin to show fall colors earlier than expected (August, September, even early October) may be shouting out a proverbial cry for help. Plants will often show yellow or red foliage coloration during periods of stress, so this may occur at any point during spring, summer, or fall. Individual trees may also show fall coloration earlier than others of their species in the same area.  Now is the time to keep an eye out for this kind of early fall color as it can give you a heads-up on issues you can expect next year.

When examining a tree with early fall color, I would recommend checking the following:

• Is there a root flare?
  Purdue Landscape Report: Deep Planting article
  • If not – tree could be planted too deep or the soil grade may have been changed
• Is there any obvious damage to the trunk, root flare, or surface roots?
  • If so, there could internal decay that is not obvious and could be contributing to stress
• Are there any girdling roots?
  Purdue Landscape Report: Stem Girdling Roots article
  • If present, they could be affecting the vascular system and strangling the tree
• Is the rootzone mulched?
  • If not, the tree could be under stress from earlier drought, or weed and grass competition.
  • If so, make sure it is not mounded against the trunk of the tree
• Does the soil appear compacted? Was there construction near the tree within the last 5 years?
  • Compaction leads to issues with water, nutrient, and even oxygen availability to the roots and could lead to general decline

It is important to know the host species, but with the sheer volume of plant material available for sale in the nursery trade, it is even more important to know the cultivar that you are planting so you know what you might expect coming into the fall.

To view this full article and other Purdue Landscape Report articles, please visit Purdue Landscape Report.

Subscribe and receive the newsletter: Purdue Landscape Report Newsletter.

Resources:
Why Fall Color is Sometimes a Dud, Purdue Landscape Report
Forest Migration Plays a Role in Fall Foliage Colors, Purdue College of Agriculture News
U.S. Forest Service Fall Colors, Forest Service, U.S. Department of Agriculture
ID That Tree Fall Color: Sugar Maple, Purdue Extension – Forestry and Natural Resources YouTube Channel, ID That Tree Playlist
ID That Tree Fall Color Edition: Black Gum, Purdue Extension – FNR YouTube Channel, ID That Tree Playlist
Autumn Highlights Tour – South Campus, Purdue Arboretum Explorer
Why Leaves Change Color – the Physiological Basis, The Education Store, Purdue Extension resource center
Subscribe, Purdue Extension-Forestry and Natural Resources YouTube Channel
Planting Your Tree Part 1: Choosing Your Tree, Purdue Extension YouTube Channel
Summer Tree Care, Purdue Landscape Report
Tree Defect Identification, The Education Store
Tree Wound and Healing, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Surface Root Syndrome, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
Ask an Expert: Tree Selection and Planting, Purdue Extension-Forestry & Natural Resources (FNR) YouTube playlist
ID That Tree, Purdue Extension-FNR YouTube playlist

John Bonkowski, Plant Disease Diagnostician
Departments of Botany & Plant Pathology

---

Tree-of-heaven (ToH), also known as Chinese sumac, varnish tree, or stink tree, is a large, rapidly growing deciduous tree native to parts of China. Tree-of-heaven was introduced to North America as early as the late 1700s and has since become invasive in most areas of the United States. Tree-of-heaven can be found, sometimes in abundance, in both urban and rural environments. The tree spreads through abundantly produced wind-scattered seeds from female trees, and sprout colonies arising from established trees, in some cases producing monoculture stands of the species. ToH has also been shown to produce allelopathic chemicals that can inhibit the growth of neighboring plants, providing an additional competitive advantage.

Tree-of-heaven is a serious threat as an invasive species in many habitats or untended areas. It can reach 80 feet or more, its growth rate outpaces most native tree species, and wind scatters seeds that female trees produce in abundance. Controlling ToH is a challenge. In this publication, Purdue University extension specialists and property managers explain herbicide options, application techniques and strategies to control and manage ToH.

To receive the free download visit the Purdue Extension’s resource center: The Education Store – Invasive Plant Series – Tree of Heaven, Ailanthus altissima.

View Forestry and Natural Resources (FNR) YouTube Video: ID That Tree: Invasive Tree of Heaven.

Resources:
Invasive Species, Playlist, Purdue Extension – FNR YouTube Channel
Report Invasive Species, Purdue Invasive Species
What are invasive species and why should I care?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Invasive plants: Impact on Environment and People, The Education Store, Purdue Extension’s resource center
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
Tree Risk Management – The Education Store, Purdue Extension’s resource center
Investing in Indiana Woodlands, The Education Store
Woodland Invaders, Got Nature? Blog, Purdue Extension – FNR
Indiana Department of Natural Resources: Invasive Species
Invasive Plant Species Identification, Video, Purdue Extension – FNR Youtube Channel
Mile-a-minute Vine, The Education Store

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

Ron Rathfon, Regional Extension Forester, Southern Indiana Purdue Agriculture Center (SIPAC)
Purdue Forestry and Natural Resources

---

MyDNR, Indiana’s Outdoor Newsletter: The Indiana Cooperative Fish and Wildlife Research Unit, or CRU, that Purdue will host, brings together the U.S. Geological Survey, U.S. Fish and Wildlife Service, Purdue University, the DNR, and the Wildlife Management Institute.

Its focus will be on delivering actionable science addressing fish, wildlife, plants, and other natural resources in Indiana and beyond, including the connection between the health of wildlife and the health of people.

The CRU Program is results focused, bringing together natural resource managers and researchers to work as a team to address the most pressing natural resource management needs with science. As such, the partnerships formalized with the creation of CRUs lead to true co-production of research.

“The creation of this new unit is another milestone in the highly successful USGS Cooperative Research Units Program, and we are proud to join the state of Indiana, Purdue University, the USGS, Wildlife Management Institute, and others to address conservation questions facing Indiana and the region,” said U.S. Fish and Wildlife Service Science Applications Program Assistant Regional Director Craig Czarnecki. “We look forward to engaging with the students and professionals at Purdue University as we co-develop scientific research and support the next generation of conservationists.”

But CRUs don’t just tackle management needs. They do so while cultivating the next generation of scientists and resource managers. The new Indiana CRU will focus on education, training, and outreach related to natural resources vital not only to Indiana, but the Midwest and regional economies as well.

Like all CRUs, the Indiana CRU will consist of 2-5 federal scientists along with graduate students, postdoctoral fellows, and administrative specialists. Federal scientists will serve as faculty at Purdue University, teaching graduate-level courses, supervising graduate students and postdocs, offering workshops for students and cooperators, and conducting research on natural resources topics. Once created, each CRU formalizes research priorities, like aquatic conservation or wildlife disease. Indiana CRU partners will decide these in the coming months.

“We look forward to the tremendous opportunity that collaboration with the Indiana CRU will bring to our state and Purdue University,” said Karen Plaut, executive vice president of research at Purdue University. “It will have a direct impact on graduate education as well as research productivity and innovation.”

For full article please visit: The partnership is Indiana’s first U.S. Geological Survey Cooperative Fish and Wildlife Research Unit, Indiana DNR Calendar.

Sign up to receive the MyDNR Newsletter by email: MyDNR Email Newsletter

Resources:
Purdue Announces New USGS Cooperative Research Unit, Purdue Agriculture New
Wildlife Habitat Education Program: Wildlife Identification Guide, The Education Store, Purdue Extension resource center
Wildlife Habitat Education Program – Teaching and Learning Wildlife Management Practices, The Education Store
Wildlife Habitat Evaluation Program: Preparing for the Wildlife Challenge, The Education Store
Developing a Wildlife Habitat Management Plan, The Education Store
Woodland Wildlife Management, The Education Store
Purdue Integrated Deer Management Project, Purdue College of Agriculture
Purdue Extension-Forestry and Natural Resources (FNR) Publications
Indiana Pond Fish, Species Identification Card Set, Purdue Extension – Forestry and Natural Resources (FNR)
A Guide to Small-Scale Fish Processing Using Local Kitchen Facilities, The Education Store
Subscribe to Purdue Extension-FNR YouTube Channel
Invasive Species, Playlist, Purdue Extension – FNR YouTube Channel
What are invasive species and why should I care?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Invasive plants: Impact on Environment and People, The Education Store, Purdue Extension’s resource center

Indiana Department of Natural Resources, Department of Fish & Wildlife

---

Purdue Landscape Report: A new invasive insect of concern has been identified in the state of Georgia. In August of 2023, Georgia’s Department of Agriculture, along with the USDA, confirmed the presence of the yellow-legged hornet, Vespa velutina, outside of the city of Savannah. To date, this is the only confirmed identification of this insect in the United States; it has already established in Europe, the Middle East, and parts of Asia outside of its native range.  V. velutina is a native of the subtropical and tropical regions of southeast Asia, and it is not yet clear how it arrived in North America. Much like the northern giant hornet, previously known as the Asian giant hornet or ‘murder hornet’, this insect will attack honeybee hives in search of food and represents a potential danger to the beekeeping industry.

Yellow-legged hornets are predators and will regularly attack honeybees to provide food for their young, though it is possible they could attack other, similar species.  Since honeybees concentrate their numbers in hives with a lot of in-and-out traffic, they provide an excellent opportunity for the hornets to hunt and provide food for their young.  The hornets are effectively ambush predators, waiting in front of hive entrances and capturing workers with their legs as they leave the hive. The hornets then dismember the bees, returning to their young with only the thorax, which contains the largest amount of protein. However, it is believed that yellow-legged hornets only represent a lethal threat to weaker hives that are already experiencing problems; it is also too early to tell how already-existing honeybee issues, such as mite and disease issues, will interact with the presence of this insect.

The yellow-legged hornet, much like other members of Order Hymenoptera, is a social insect. They create oval or egg-shaped nests in trees that can house as many as 6,000 individuals. Colonies are composed of a foundress and her young, who become the workers within the colony.  Female hornets will overwinter within tree hollows, leaf litter, or other environmentally stable locations, and once spring arrives, they start their own colony and give birth to new workers who care for young and hunt.

As with any new invasive species, it is critical to successful identify it and differentiate it from other species of wasps and hornets that we experience in the Midwest.  At a glance, the yellow-legged hornet is barely discernable from European hornets, yellowjackets, and similar insects; they possess aerodynamic shapes with heavy yellow and black color patterns like many of their cousins. The most easily identified trait is their namesake: the legs of this insect tend to be black closer to the body, with the lower half of the leg bright yellow. The segments of the abdomen follow a similar pattern, with those segments closer to the center of the body being dominated by black, steadily becoming more yellow as you reach the tip of the abdomen. The yellow-legged hornet is also approximately an inch in length, with reproductive individuals sometimes reaching an inch and a half.

While remaining observant will be critical to reporting any invasive species, there are a few things to keep in mind about the yellow-legged hornet. This insect has only been found in one location in Georgia; no other states have any sightings or confirmed reports of this insect. There is also no evidence the insect has established a population in Georgia, there is only one confirmed sighting. The best course of action for now is to be vigilant and report any potential sightings by calling 1-866-NOEXOTIC, or you can contact our local Purdue Extension educator for assistance.

To view this full article and other Purdue Landscape Report articles, please visit Purdue Landscape Report.

Subscribe and receive the newsletter: Purdue Landscape Report Newsletter.

Resources:
Invasive Species, Playlist, Purdue Extension – FNR YouTube Channel
Report Invasive Species, Purdue Invasive Species
What are invasive species and why should I care?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Pest Management, The Education Store
Protecting Pollinators: Why Should We Care About Pollinators?, The Education Store, Purdue Extension resource center
Ask The Expert: What’s Buzzing or Not Buzzing About Pollinators , Purdue Extension – Forestry & Natural Resources (FNR) YouTube Channel
Purdue Pollinator Protection publication series, Purdue Extension Entomology
Subscribe Purdue Extension-Forestry and Natural Resources YouTube Channel

Bob Bruner, Exotic Forest Pest Educator
Purdue Entomology

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

Cliff Sadof, Professor, Ornamental, Pest Management
Purdue Entomology Extension Coordinator

---