Got Nature? Blog

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet Butternut or Juglans cinerea.

Also known as white walnut, this species has slowly disappeared from the landscape due to a fungal disease. Butternut canker can cause large dead spots on the tree and can even girdle the tree and kill it before it can produce fruit.

Butternut has alternately held compound leaves that can be between one and two feet long, resembling a black walnut leaf with pairs of leaflets, but butternut often has a terminal leaflet. The toothed leaflets are green in the summer and yellow in the fall.

The bark is light gray and relatively smooth, but it may become furrowed with age, silver on top and darker between the fissures. Butternut twigs are light tan in color and have an elongated terminal bud. The leaf scar resembles the face of a monkey and it has a “hairy eyebrow” above the leaf scar/below the bud.

The fruit is a lemon-shaped edible nut approximately two inches in diameter with sharp ridges on the nut inside the husk. When they are green, the husk is sticky and clammy to the touch, unlike the smooth, thick skin of its cousin black walnut.

Butternuts, which grow 40 to 60 feet tall, prefer moist, well-drained, loamy soils, found in ravines and coves, but it can also grow on drier, rocky soil, especially that of limestone origin. It is usually scattered in the forest and associated with other species that prefer upland sites.

For full article with additional photos view: Intro to Trees of Indiana: Butternut, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Butternut
Hardwoods of the Central Midwest: Butternut
Hardwood Lumber and Veneer Series: Butternut
Morton Arboretum: Butternut
Identification of Butternuts and Butternut Hybrids, The Education Store
Conservation and Management of Butternut Trees, The Education Store
The Plight of the Butternut
HTIRC Seed Propagation Protocol for Purdue and Hybrid Butternut
Purdue Arboretum Explorer
Butternut, Native Tree of Indiana River Walk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet Black willow or Salix nigra. The black willow is one of several species of willow in Indiana, but it is the only tree-sized willow in the state.

This species has long, narrow leaves with short leaf stems, which are held alternately on slender, flexible twigs. Willows have a single scale covering the bud, which helps differentiate them from other species. The finely toothed leaves are medium green in the spring, changing to yellow-green in the fall.

The bark on young trees is smooth, but may be warty or feature some flaking. In old trees, the bark features prominent, light gray vertical flakes.

Black willows, which grow 50 to 70 feet tall, prefer moist or wet soils and often are found growing along streams or in other wetland areas. This species can tolerate alkaline soil, clay soil, occasional flooding and road salt.

For full article with additional photos view: Intro to Trees of Indiana: Black Willow, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Black willow
Hardwoods of the Central Midwest: Black willow
Hardwood Lumber and Veneer Series: Black willow
Morton Arboretum: Black willow
Purdue Arboretum Explorer
Black Willow, Native Trees of Indiana River Walk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
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
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet Black walnut or Juglans nigra.

Also known as American black walnut or eastern black walnut, this species has compound leaves with several pairs of leaflets along the individual leaf stems. The leaves, which are arranged alternately on the twigs, can be between one to two feet long. They are green in summer and turn yellow in the fall. The terminal and lateral buds are fuzzy and tan and can resemble suede.

The bark has long, strong running ridges and in older trees can resemble alligator hide. Under the surface of the bark is a dark, chocolate brown color.

Black walnut trees produce nuts, which are ridged and rounded with very heavy shells. Nuts are encased in a thick yellow-green husk, which can leave a dark brown stain on skin. The nut shells require a heavy hammer hit or sharp animal teeth or claws to break open. The nut meat has a very strong aromatic flavor.

Black walnuts, which grow 50 to 75 feet tall, prefer to grow in sunshine and in high quality soils that are deep and well-drained. This species is often found as one of the tallest in the woodlands where they grow. The best quality trees are frequently found on flood free ledges just above stream banks. This species will live on poorer soils, but growth is slow and the wood quality is generally poor.

The natural range of the black walnut is the from the east coast west through the Great Plains. It ranges from Texas and Georgia north to central Minnesota, Wisconsin, Michigan and southern Ontario.

For full article with additional photos view: Intro to Trees of Indiana: Black Walnut, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Black Walnut
Hardwoods of the Central Midwest: Black Walnut
Hardwood Lumber and Veneer Series: Black Walnut
Morton Arboretum: Black walnut
Facts About Black Walnut, The Education Store
Purdue Arboretum Explorer
Black Walnut, Native Trees of Indiana River Walk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

Tree-of-heaven is native to Asia but has been widely planted in North America and now spreads naturally as a serious invasive tree threat.

In this episode of ID That Tree, Purdue Extension forester Lenny Farlee identifies the invasive tree of heaven, also known as stinking sumac, due to the foul odor that permeates from nearly all parts of the tree. The alternately held compound leaves have teeth at the base of the leaflets on stout stems, while the bark is a medium gray with white wormy marks. This tree spreads through the seeds of its female trees and from suckers off its root system, and it is also the preferred host of an invasive insect, spotted lanternfly, now found in Indiana. Learning to recognize invasive pests a good first step to limiting their spread.

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 Tree, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel (Invasive White Mulberry, Siberian Elm, Tree of Heaven)
Invasive Species Playlist, Playlist, Purdue Extension – FNR YouTube Channel (Asian Bush Honeysuckle, Burning Bush, Callery Pear, Multiflora rose)
A Woodland Management Moment, Playlist, Purdue Extension – FNR YouTube Channel (Against Invasives, Garlic Mustard, Autumn Olive)
Woodland Stewardship for Landowners, Playlist, Purdue Extension – FNR YouTube Channel (Common Buckthorn, Japanese Barberry)
Report Invasive Species, Purdue Invasive Species
The GLEDN Phone App – Great Lakes Early Detection Network
EDDMaps – Early Detection and Distribution Mapping System (Report Invasives)
How long do seeds of the invasive tree, Ailanthus altissima remain viable? (Invasive Tree of Heaven), USDA Forest Service
Indiana Department of Natural Resources: Invasive Species
Indiana Invasive Species Council
Cooperative Invasive Species Management Area (CISMA)
Aquatic Invasive Species, Illinois-Indiana Sea Grant (IISG)
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
Spotted Lanternfly Feeds on Over 70 Plus Plant Species, Got Nature? Blog, Purdue Extension – FNR
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store, Purdue Extension Resource Center
Native Trees of the Midwest, The Education Store
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store

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

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet Tulip tree or Liriodendron tulipifera.

The state tree of Indiana, also known as the tulip poplar or yellow poplar, however, is actually more closely related to the magnolia family than the poplar family. It is easily identified by its large, simple tulip shaped leaves held alternately on long leaf stems. The leaves, which feature three lobes, including the top lobe which is widely notched in the middle, turn from glossy green to a golden yellow in the fall.

The bark on young trees is smooth and gray with streaks of white between the ridges, while the bark of older trees is gray-brown and features deep, long running ridges. The trunk is very straight and column-like as it grows toward the sunlight and the tree self-prunes lower branches.

In the spring, the tulip tree produces colorful green and yellow, tulip like flowers with an orange band at the base of each petal, which bloom in May or June, but are often found high up on the tree.

The cone-shaped fruit is a collection of winged seeds that resembles a small, dry pineapple, approximately two-inches in length, which sits upright on the branches.

Tulip trees, which grow 70 to 90 feet tall, are often among the tallest trees in Indiana woodland areas as they are shade intolerant and prefer to grow toward the light. They can often be found in woodlands as large as three to four feet in width on the trunk. Tulip trees prefer acidic, moist, well-drained soil, but can tolerate alkaline soil.

The natural range of the tulip tree is the eastern United States. Its western reach extends from spots in central Louisiana across the eastern edge of Missouri and Illinois up through Indiana and the southern part of Michigan, and reaches eastward across the gulf states and the panhandle of Florida. It can be found throughout much of the Atlantic coast, reaching northward to Pennsylvania, New York and Connecticut.

The Morton Arboretum warns that tulip trees are highly susceptible to ice damage and are marginally hard with weak wood and branch structure.

For full article with additional photos view: Intro to Trees of Indiana: Tulip Tree, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Tulip Tree
Morton Arboretum: Tuliptree
Finishing and Restoring Wood and Structures: Yellow-Poplar Lumber for Exterior Architectural Applications in New Construction and for Historical Restoration, The Education Store
Purdue Arboretum Explorer
Tulip Tree-Native Trees of Indiana Riverwalk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet Sycamore or Platanus occidentalis

The large leaves of this species have three to five lobes and loosely resemble that of maples, but are significantly larger and are alternately held, versus the opposite leaf arrangement of maples. The bright green, broadly toothed leaves and stems are slightly fuzzy to the touch.

The bark on the lower part of the tree is scaly and brown, while the upper trunk and limbs are smooth, shiny and white. The bark peels revealing patches of white, gray and green.

The fruit of the Sycamore is a soft, one-inch brown ball-like seed head, which hangs on a long stem. The seeds shatter during winter months.

Sycamore trees, which grow 75 to 100 feet tall, are among Indiana’s largest deciduous trees. They are often found on stream or creek bottoms and other moist soil areas. This species is tolerant of clay soil, occasional flooding and road salt.

The natural range of the sycamore is the central and eastern United States. It extends from eastern Texas and Oklahoma and Kansas west across Iowa Illinois, Indiana, Ohio and up into southern Michigan and parts of New York and Massachusetts. It extends down the Atlantic coast to southern Georgia and across Alabama, Mississippi and Louisiana, but do not reach the Gulf coast.

The Morton Arboretum warns that sycamores are best planted in full sun as it does not tolerate shady sites and should not be grown near septic fields. This species can be affected by anthracnose, leaf spots, aphids, plant bugs, scale insects, bagworms and borers and is also susceptible to frost cracks.

For full article with additional photos view: Intro to Trees of Indiana: Sycamore, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Sycamore
Morton Arboretum: Sassafras
Hardwood Lumber and Veneer Series: Sycamore, The Education Store
Purdue Arboretum Explorer
Sycamore-Native Trees of Indiana Riverwalk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

Among the steel and concrete that make up the urban environment, trees provide welcome relief from heat and potentially unfavorable sights and smells. Trees provide value from ecosystem services, which can refer to any of the benefits humans obtain from nature. Trees in the built environment provide many benefits, such as storing carbon, reducing air temperature and air conditioning costs, filtering air and water pollutants, intercepting rainwater to reduce flooding, and increasing aesthetic value.

The Preparing Indiana’s Urban Forest for Climate Change is an overview of choosing species of trees that will thrive in urban settings has always required careful consideration, but climate change is making that task even more important. In this paper, Purdue and other researchers provide tools to help urban foresters, arborists and planners adapt so that the ecosystem services that trees provide can be maintained.

To receive the free download for the Preparing Indiana’s Urban Forest for Climate Change please visit The Education Store.

Resources:
Urban Forestry, Playlist, Purdue Extension – Forestry and Natural Resources (FNR) YouTube Channel
Community Development, Purdue Extension
How to Find an Arborist Near You!, Purdue Extension – FNR Got Nature? Blog
Storms Can Cause Damage and Tree Cleanup, What You Need to Know, Purdue Extension – FNR Got Nature? Blog
Purdue Landscape Report, Purdue Science-Based Midwest Landscaping
Forest Improvement Handbook, The Education Store, Purdue Extension’s resource center
Investing in Indiana Woodlands, The Education Store
Woodland Wildlife Management, The Education Store
ID That Tree, Playlist, Purdue Extension – Forestry & Natural Resources (FNR) YouTube Channel

Julie McAulay, Undergraduate Research Assistant in Environmental and Ecological Engineering
Purdue Department of Forestry and Natural Resources

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

Brady Hardiman, Associate Professor for Environmental and Ecological Engineering
Purdue University Department of Forestry and Natural Resources

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet the persimmon or Diospyros virginiana, one of Indiana’s fruit producing trees.

The alternately held leaves of persimmon are oval shaped with smooth margins, with no lobes or teeth. The thick dark green leaves turn yellow or reddish-purple in the fall. The buds are dark colored, while leaf stems are light brown.

The bark resembles alligator hide with deep broken ridges, often with an orange coloring between the ridges.

The fruit, a pumpkin orange colored fleshy plum-like fruit, is a standout characteristic and is favored by both wildlife and humans. Once it ripens and falls from the tree, persimmon is soft and sweet. If picked from the tree, this fruit can be green, very hard, gummy in texture and acidic. The seed count in persimmon is variable with some seedless varieties and some with as many as 10 seeds.

Persimmon trees, which grow 35 to 60 feet tall, are native to southern Indiana but can be found planted across the state. This species grows best in full sun and in moist, well-drained soils, but are tolerant of alkaline soil, clay, dry sites, and occasional drought. The natural range of the persimmon is the lower Midwest and southeastern United States reaching up into southern Illinois.

For full article with additional photos view: Intro to Trees of Indiana: Persimmon, Forestry and Natural Resources’ News.

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.

Other Resources:
Hardwoods of the Central Midwest: Persimmon
ID That Tree: Persimmon
Morton Arboretum: Persimmon
Persimmons, The Education Store
Persimmon, Native Trees of Indiana River Walk, Purdue Fort Wayne
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we meet the Osage Orange or Maclura pomifera, also known as the hedge apple. While this species is not native to Indiana, it is found throughout the state, where it was planted for fence rows and fence post plantings due to its decay resistant wood.

The leaves of Osage orange are oval shaped with pointed tips held alternately on slender twigs. The dark, glossy green leaves have smooth margins and no lobes. The twigs will often have sharp thorns more than half an inch long that are found where the leaves emerge and where the buds are located.

The bark of this species has a light gray surface with an orange undercoloring, which is distinctly furrowed and has a somewhat fibrous appearance. Osage orange is often multi-stemmed and spreads out over a large area.

The fruit of Osage orange, produced by female trees, also is a key identifying characteristic, as it resembles a large yellow-green-colored bumpy orange or a bumpy green apple. The fruit is four to six inch in diameter and has many folds, bumps and crevices, which has led to the description of it looking like a brain. Osage oranges have a sticky, milky sap on the inside.

Osage orange trees, which grow to 20 to 40 feet tall, are found in moist, well-drained soils, but are tolerant of alkaline soil, clay, dry sites, occasional drought and flooding. The natural range of the Osage orange is Arkansas, Texas, Oklahoma and the region surrounding the Ozark mountains, although it has been planted in nearly every one of the lower 48 states.

For full article with additional photos view: Intro to Trees of Indiana: Osage Orange, Forestry and Natural Resources’ News.

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.

Other Resources:
Fruit Like a Brain and Wood Like Steel – Got Nature article
You Say Hedge-Apple, I Say Osage Orange!, Indiana Yard and Garden – Purdue Consumer Horticulture.
Osage Orange, The Wood Database
Hardwoods of the Central Midwest: Osage orange
ID That Tree: Osage orange
Morton Arboretum: Osage orange
The Woody Plant Seed Manual, U.S. Forest Service
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species.  Nearly 70 years later, the publication has been updated through a joint effort by the Purdue Department of Forestry and Natural Resources, Indiana 4-H, and the Indiana Department of Natural Resources, and reintroduced as “An Introduction to Trees of Indiana.”

The full publication is available for download for $7 in the Purdue Extension Education Store. The field guide helps identify common Indiana woodlot trees.

Each week, the Intro to Trees of Indiana web series will offer a sneak peek at one species from the book, paired with an ID That Tree video from Purdue Extension forester Lenny Farlee to help visualize each species as it stands in the woods. Threats to species health as well as also insight into the wood provided by the species, will be provided through additional resources as well as the Hardwoods of the Central Midwest exhibit of the Purdue Arboretum, if available.

This week, we take a look at the ninth and final of our featured oak varieties in Indiana, the Shingle Oak or Quercus imbricaria.

The leaves of shingle oak are oblong and have entire leaf margins, without lobes or teeth, unlike all other Indiana oaks. This species also retains its shiny, bristle-tipped leaves further into the winter than other oaks. The leaves turn from a dark green in the summer to yellow and brown in the fall.

The bark is dark gray and blocky, with long running ridges. Shingle oak tends to keep its lower dead limbs attached to the tree.

The fruit is a small, rounded acorn with a thin cap that covers a third to half of the acorn. The acorns turn dark in color before losing their caps, although some may drop off the tree with their caps in tact.

Shingle oaks, which grow to 50 to 60 feet tall and are found in moist, well-drained soil along streams and on hillsides, but can occasionally be found on dry sites. The natural range of the shingle oak is the midwestern United States, including the Appalachian mountain region, Ohio, and the central Mississippi River valley.

The Morton Arboretum states that shingle oak is fairly salt tolerant and tolerant of black walnut toxicity, and despite the fact that it has a taproot, this species can be easier to transplant than some other oaks.

Shingle oak, however, can be plagued with pests such as scale insects and two-lined chestnut borer. As with other oaks, the shingle oak should be pruned in the dormant season to avoid attracting beetles that may carry oak wilt, which can be a potential disease problem.

Shingle oaks get their name, because traditionally the species was sectioned out and made into wood shingles.

For full article with additional photos view: Intro to Trees of Indiana: Shingle Oak, Forestry and Natural Resources’ News.

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.

Other Resources:
ID That Tree: Shingle Oak
ID That Tree: Red Oak Group
Hardwood Lumber and Veneer Series: Red Oak Group
Morton Arboretum: Shingle Oak
Fifty Common Trees of Indiana
An Introduction to Trees of Indiana
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

Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources

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

---