Got Nature? Blog

Did you know that pecan is a relative of the native bitternut hickory? Purdue Extension forester Lenny Farlee shares more about this species, which features relatively narrow leaflets, strong sulphur yellow colored elongated buds and a tight light gray colored bark with small interlacing ridges.

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
Carya cordiformis, The Purdue Arboretum Explorer
Hickory and Pecan Species, Education Store, Purdue Extension resource center
Bitternut Hickory, Native Trees of Indiana River Walk, Purdue – Fort Wayne
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

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


Some trees just don’t follow the rules. Case in point, the alternate leaved dogwood. As Purdue Extension forester Lenny Farlee explains, this native tree has an alternate leaf arrangement unlike its dogwood cousins in North America, which have an opposite leaf arrangement. It is still recognizable, however, by the venation running parallel to the outside edge of the leaf, and very large, egg-shaped leaves. It also has clusters of small white flowers in the spring.

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

Resources
Cornus alternifolia, The Purdue Arboretum Explorer
ID That Tree, Purdue Extension – Forestry & Natural Resources Playlist
A Woodland Management Moment, Purdue Extension – Forestry & Natural Resources Playlist
Tree Appraisal and the Value of Trees, The Education Store
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store

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


In this edition of ID That Tree, we introduce you to the cucumber magnolia. This native Indiana species is much like other members of the magnolia family, except it has green cucumber like fruit and a unique bark. Learn more from Purdue Extension forester Lenny Farlee.

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

Resources
Indiana’s Native Magnolias, The Education Store, Purdue Extension resource center
Cucumber Magnolia, Native Trees of Indiana River Walk, Purdue Fort Wayne
Magnolia Acuminata, The Purdue Arboretum Explorer
ID That Tree, Purdue Extension – Forestry & Natural Resources Playlist
A Woodland Management Moment, Playlist
Investing in Indiana Woodlands, The Education Store, Purdue Extension resource center
Forest Improvement Handbook, The Education Store

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


Purdue Extension forester Lenny Farlee introduces you to the American Basswood. He shares about how to identify this species, where you might find them and common uses.

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
FNR Hardwood – American Basswood, The Purdue Arboretum Explorer
Tilia Americana, The Purdue Arboretum Explorer
Basswood, Native Trees of Indiana River Walk, Purdue – Fort Wayne
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

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


Join Purdue Extension forester Lenny Farlee and extension wildlife specialist Brian MacGowan with another new video added to the Ask an Expert YouTube Playlist. This episode of Ask an Expert covers everything from the change in fall foliage to invasive species identification and control, fall foods for humans and wildlife, habitat prep and management and planning ahead for spring plantings.

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
Ask An Expert, Playlist, Purdue Extension – Forestry and Natural Resources (FNR) Youtube channel
A Woodland Management Moment, FNR Playlist
Woodland Stewardship for Landowners, FNR Playlist
Invasive Species, FNR Playlist
Fall Color Pigments, FNR Video
Wildlife Habitat Education Program – Teaching and Learning Wildlife Management Practices, The Education Store, Purdue Extension resource center
What Nurseries Need to Know About the Invasive Species Regulation, The Education Store
Invasive plants: impact on environment and people, The Education Store

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


Question: My husband and I are 64 and have been in woods all our lives. We came across a tree we couldn’t identify and are wondering if you are familiar with it. It kind of looks like a birch with giraffe like markings. We are wondering if it is diseased since it is so unusual.  Please see photos.
PaperMulberryTreePaperMulberryTree2PaperMulberryTree3

 

 

 

 

 

Answer:
Thank you for your Ask an Expert inquiry regarding the identification of this tree and asking if it is invasive. After sharing this with other master arborists we have identified this tree:
Paper Mulberry
Broussonetia papyrifera (L.) L’Her. ex Vent
Mulberry family (Moraceae)
Origin: Japan and Taiwan
Background: Paper mulberry was introduced for use as a fast-growing shade tree. Native Pacific cultures use it to make bark cloth.
Distribution and Habitat: Found from Illinois to Massachusetts, south to Florida and west to Texas, paper mulberry invades open habitats such as forest and field edges. Internationally, it is identified as an invasive weed in over a dozen countries.
Ecological Threat: Once established it grows vigorously, displacing native plants through competition and shading. If left unmanaged, paper mulberry can dominate a site. Its shallow root system makes it susceptible to blowing over during high winds, posing a hazard to people and causing slope erosion and further degradation of an area.

We have several resources to help you as you identify trees and invasives:
Purdue Plant and Pest Diagnostic Laboratory, send in a sample or photos to help identify or diagnose trees and plants (cost $11+), Purdue Extension-Botany and Plant Pathology
Tree Doctor, download app that can be used to help identify and learn more regarding tree diseases Purdue Extension-The Education Store
Certified Arborist, Find an Arborist, International Society of Arboriculture
Invasive Forest Pests in IN, Purdue Extension-Entomology
Indiana Invasive Species Council
Ask an Expert, Purdue Extension-Forestry & Natural Resources

More Resources:
Red and White Mulberry in Indiana, The Education Store, Purdue Extension Depot
Invasive plants: impact on environment and people, The Education Store
Woodland Stewardship for Landowners: EQIP, YouTube, Purdue Extension
Invasive Species, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
Woodland Stewardship for Landowners, Playlist
FNR Ask An Expert: Invasive Plant Species, Video
ID That Tree, Playlist
What are invasive species and why should I care?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Report Invasive Species, Purdue Invasive Species
The GLEDN Phone App – Great Lakes Early Detection Network
EDDMaps – Early Detection and Distribution Mapping System
Indiana Department of Natural Resources: Invasive Species
Indiana Invasive Species Council
Cooperative Invasive Species Management Area (CISMA)

Lindsey Purcell, Chapter Executive Director
Indiana Arborist Association


In this video, we explain the second treatment technique utilized on the Hardwood Ecosystem Experiment, even-aged management. This technique aims to create areas where all of the trees are the same age. Watch to learn how this is accomplished.

The 100 year study, Hardwood Ecosystem Experiment (HEE), brings pertinent forest management data to many in Indiana. HEE Extension publications continue to share topics including: Wildlife Responses to Timber Harvesting, Sustaining our Oak-Hickory Forests, Forest Birds and more.

To learn more about this 100 year forest management plan and see its impacts, check out the Hardwood Ecosystem Experiment (HEE) website.

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

Resources
Hardwood Ecosystem Experiment (HEE), Playlist,  Purdue Extension – Forestry and Natural Resources
Hardwood Ecosystem Experiment: Uneven-aged Management, Video
A Woodland Management Moment, Playlist
Woodland Stewardship for Landowners, Playlist
The Hardwood Ecosystem Experiment: Indiana Forestry and Wildlife, The Education Store, Purdue Extension resource center
Resources and Assistance Available for Planting Hardwood Seedlings, The Education Store

Charlotte Owings, Hardwood Ecosystem Experiment Project Coordinator
Purdue University, Department of Forestry and Natural Resources


Hickories aren’t often thought of for their fall foliage, with some exceptions. Meet the shagbark hickory and its stunning golden leaves. Learn more in this edition of ID That Tree with Purdue Extension forester Lenny Farlee.

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

Resources
ID That TreePlaylist, Purdue Extension – Forestry and Natural Resources Youtube Channel
Hickory and Pecan Species, The Education Store, Purdue Extension resource center
Shagbark Hickory, Native Trees of Indiana River Walk, Purdue Fort Wayne
Shagbark Hickory, The Purdue Arboretum Explorer
Fall Color Pigments, Video,  Purdue Extension – Forestry and Natural Resources Youtube Channel
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

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


Purdue Landscape Report: Tubakia leaf spot, caused by the fungus Tubakia, is the disease we find more commonly on oak than any other. Throughout the world, there are 11 species of Tubakia known to infect oak, with Tubakia dryina (previously known as Actinopelte dryina) being the most commonly encountered species in our landscapes. Apple, ash, black gum, chestnut, elm, maple, and redbud are all reported as hosts of Tubakia species, but oaks are the most frequently and severely affected. Among the oaks, the red oak group, specifically red, pin, and black oaks, are reported to be more susceptible to infection compared to those in the white oak group.

figure2

Figure 2: Oak leaf with circular shaped Tubakia leaf spots along with extensive veinal necrosis.

figure1

Figure 1: Oak leaf with irregularly shaped Tubakia leaf spots and veinal necrosis.

Leaf spots appear in mid to late summer (July –August) as small circular to irregular tan, red-brown, to dark brown spots (Figure 1, 2) that expand to approximately the size of a dime overtime, but can coalesce, forming large areas of necrotic tissue (Figure 3) . When a spot reaches a leaf vein it expands very quickly, causing a necrotic streak along the vein, and can cause blighting of most of the leaf (Figure 4, 5). Trees under stress from other causes will frequently exhibit more severe leaf spotting compared to healthier trees. Premature defoliation can occur in these situations.
figure3

Figure 3: Marginal blighting due to coalescing spots and veinal necrosis.

figure5

Figure 5: Blighting of large leaf area caused by veinal infection by Tubakia.

figure4

Figure 4: Typical Tubakia leaf spot symptoms illustrating how the fungus spreads along leaf veins.

The pathogen produces conidia within shield shaped structures called pycniothyria (Figure 6) which can be found on both the top or bottom surface of the leaf and along veins (Figure 7). These structures are very small and can only be seen with a 40x or stronger hand lens. The fungus overwinters on fallen leaves and on dead stems which act as the source of inoculum for the next year. During early spring, spores are spread by wind and water splash dispersal (rain) to healthy new foliage. However, it takes time for symptoms to develop throughout the season, depending on tree stress and environmental conditions (warm wet weather favors spread).

For full article view: Purdue Landscape Report, Purdue Landscape Report.

Resources:
Diseases of Landscape Plants: Leaf Diseases, The Education Store, Purdue Extension resource center
Consumer Horticulture: Fertilizing Woody Plants, The Education Store
Tree Disease; Oak Wilt in Indiana, The Education Store
Diseases of Soybean: Frogeye Leaf Spot, The Education Store
Bur Oak, Purdue Arboretum Explorer
Bur Oak, Native Trees of Indiana River Walk, Purdue Fort Wayne
Find an Arborist, TreesAreGood.org

John Bonkowski, Plant Disease Diagnostician
Purdue Department of Botany and Plant Pathology

Tom C Creswell, Clinical Engagement Professor – PPDL
Purdue Department of Botany and Plant Pathology


Join Purdue Extension forester Lenny Farlee and Dr. Carrie Pike, a forest regeneration specialist with the USDA Forest Service, as they share about conservation tree planting, what species are available to plant, where to get them and more.

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
Find An Indiana Forester Website
Reforestation, Nurseries and Genetics Resources Website (RNGR.NET)
A Nursery Guide for the Production of Bare Root Hardwood Seedlings, (RNGR.NET)
Landowner Information, Hardwood Tree Improvement Regeneration Center (HTIRC)
Ask An Expert, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Woodland Management Moment, Playlist
Ask An Expert: Tree Inspection, Video
Planting Forest Trees and Shrubs in Indiana, The Education Store, Purdue Extension resource center
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

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


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