The Hidden Benefits of Trees

An Exploration of Medicinal and Other Uses from First Nations to Today

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Hidden Benefits of Trees

A number of trees that can be found in the University’s Natural Study Area have been used throughout history for their medicinal and other benefits. Explore some of the riches of these trees that are hidden in plain view along portions of the White Oak Trail next to Fair Lane Lake in the Environmental Study Area (ESA) at UM-Dearborn. The campus sits on the traditional territory of the Three Fires Confederacy of First Nations, comprising the Ojibwe, the Ottawa, and the Potawatomi. 

Trees along the Trail

  • 1 : Black Cherry - Prunus serotina
  • 2 : Eastern Hop-Hornbeam - Ostrya virginiana
  • 3 : Red Oak - Quercus rubra
  • 4 : Shagbark Hickory - Carya ovata
  • 5 : Basswood - Tilia americana
  • 6 : Sugar Maple - Acer saccharum
  • 7 : American Beech - Fagus grandifolia
  • 8 : Silver Maple - Acer saccharinum
  • 9 : Black Walnut - Juglans nigra
  • 10 : Hawthorn - Crataegus

Disclaimer: 

Medicinal uses are provided for informational use only and are not intended to take the place of professional medical consultation. For more information on how to forage safely  click here . Foraging and collecting are prohibited in the Environmental Study Area.

The Hidden Benefits of Trees

To view the slideshow for each tree, click on the buttons at the bottom of the photograph.

1

Black Cherry

Prunus serotina

First Nations people dried the inner bark to make a tea that alleviates the symptoms of colds, fevers, diarrhea, and labor pains (e.g.,  Chippewa and Potawatomi ). They also used the root to treat intestinal worms, burns, cold sores, and certain skin conditions.  For several decades black cherry was listed in the National Formulary and the United States Pharmacopeia, though it was removed in the 1980s due to a governmental decision to lessen the emphasis on crude plant drugs.

Early Appalachian settlers called black cherries “rum cherries” and they used the fruit to make a strong alcoholic drink.  Dark Cherries were also used to flavor other liquors like wine, rum, whiskey, and brandy.

Even though the bark looks thin and flaky, the wood of this tree is strong, and is commonly used for fine carpentry. This wood is dubbed “poor man’s mahogany” and is ideal for cabinets, furniture, toys, and fine instruments. Today you may find this wood labeled as “American Cherry” wood.

2

Eastern Hop-Hornbeam

Ostrya virginiana

The most distinguishing feature of this tree is its fruit that resembles hops, a bitter flower commonly used in beer. 

The  Cherokee and Potowatomi  tribes commonly made medicines using the tree's heartwood.  These include a hot tea to treat lung hemorrhages, coughs and colds, and problems with the kidneys. They also used herbal steam to alleviate rheumatism.

Because the wood of this tree is exceptionally strong, it has been used by early settlers and first nation tribes for tool handles such as levers, axes, and mallets. This has led the tree to have another common name: Ironwood. Because it is such a strong wood, when used for bow making, it creates a bow with a stronger pull weight that supports a harder hitting arrow.

3

Red Oak

Quercus rubra

The Red Oak tree has two distinguishing parts used most for foods and remedies: the acorns and the bark.

First Nations commonly used the bark of this tree to create a powder that could be combined with other tree parts or plants for heart medicine. The bark and inner bark of the tree were also used to treat many other ailments, both internally and externally. The boiled bark was used to create a wash to treat and clean abrasions, burns, rashes, and other topical skin irritations. The inner bark was also used as a tea to help with indigestion or other digestive system ailments, severe coughs or throat irritation, and fevers. Learn more about medicinal uses by the  Ojibwa, Cherokee, and Chocktaw .

The acorns were used as a food source by many first nation tribes and early settlers.  They were ground into flour that could be used for baking or to create a thin porridge.  Acorns can also be eaten whole after being roasted.  Boiling the acorns with basswood ashes was a common practice for removing their bitter taste. 

The  Chocktaw, Chippewa, and Cherokee  also used the boiled bark and ashes from this tree to create dyes and to tan their leathers. Because the wood is strong, yet flexible, it was used for many different tools, such as bows, spears, and other tool handles. It is still used today for many craft items.

4

Shagbark Hickory

Carya ovata

One of the most distinct characteristics of this tree is its curled bark that looks like a shaggy dog’s fur curling away from itself. The  Chippewa and Iroquois  boiled the bark to make an infusion that can be applied to skin with a warm cloth for arthritis relief. They also used the small shoots from the tree to treat headaches.  Oil was also extracted from the nut and mixed with bear grease to make a bug repellent.

Many  First Nations  and early settlers used the nuts for baking desserts and bread, or creating soups and baby food.  The nuts from this tree are naturally sweet and were often eaten lightly roasted as a snack. The sap was also used as a sweetener after being boiled to a syrup-like consistency.  

The tree's wood is extremely efficient wood to burn and produces a high quality and flavorful charcoal that was historically used to smoke meats, a tradition that lasts to this day. The strong wood is also ideal for use in tool creation. In addition, the flexibility of the sapwood made it an ideal bow stave material.

5

Basswood

Tilia americana

The name Basswood originates from fibers in the inner bark of the tree, known as bast, which are the longest and strongest continuous fibers of any North American tree. However, another common name for this tree is the American Linden, named after the linden flowers the tree produces. These flowers were widely used for their medicinal properties, which have been found to contain antioxidant and astringent chemicals.

The  Cherokee and Iroquois  used many parts of the tree to treat their ailments. The bark was often boiled and added to corn-meal to create a warm compress that soothed skin boils.  Both tribes also used a compound created from the inner bark to treat dysentery and other stomach ailments.  The Cherokee also crafted a jelly from the tree that they used to treat coughs and consumption (an antiquated term for tuberculosis).  The flowers were used by early settlers up until the patent medicine era of the early 1900s by boiling them as a tea to be used as a sedative, cough syrup, or to relieve anxiety. 

Tough cord or thread can be made out of the bast of the tree by first boiling and then rubbing the fibers on a stick to separate them.  They were then spun or braided to form the thread and cord. For sewing, fibers were soaked in water until the outer tissues rotted away, leaving the smoother inner fibers.  The heartwood of this tree is lighter and softer than other trees, so it was less often used for tools.  However, the lighter coloring and ease of carving made it ideal for figurines and beads.  Today it is a common guitar body wood.

6

Sugar Maple

Acer saccharum

Indigenous peoples have been making maple syrup long before European settlers. Many tribes, like the  Ojibwe and Cherokee , also used the sap as a seasoning to cure meat. The Ojibwe tribe was also known to create maple candies that were traded to settlers for supplies throughout what is now Michigan and the Canadian provinces of Ontario and Quebec. It takes about 40 gallons of sugar maple sap to make just 1 gallon of syrup!  

Syrup made from the sap of this tree has also been used medicinally as a liver tonic, cough syrup, and even as a kidney cleanser. Tea was also made from the inner bark and used as a blood tonic, a type of drink thought to boost the amount of blood in the body and improve vitality.

Known for being a valuable hardwood tree in North America, the wood is commonly used in many recognizable items such as baseball bats, bowling pins, pool cues, and musical instruments.

7

American Beech

Fagus grandifolia

Unlike the other trees on this trail the American beech has extremely smooth bark.  This unfortunately makes it a common target for tree carving. 

Creosote, a dense charcoal tar, made from beech wood is used externally as a medicine for various skin conditions and sores. It is important to note that coal tar creosote, the kind used to protect wood from rots, is highly toxic to humans.

Beech wood is dense, but highly susceptible to rot, which limits its use for carpentry.  It is used for bentwood furniture, where steam is applied to the wood to bend it.  It was also used for veneer, plywood, baskets, pulp, charcoal, and rough lumber.  It is especially favored for fuelwood because of its high density and good burning qualities.

Beech mast (commonly referred to as beech nuts) is palatable to a large variety of birds and mammals.  Deer Mice, in particular, are very good at caching large stores for the winter.  Discarded beech nut shells on the snow would alert Native Americans to a hidden stash of nuts underground or inside a nearby log.  The  Potawatomi and Chippewa   relied upon these hidden caches for food in the winter.

8

Silver Maple

Acer saccharinum

The silver maple is now one of the most common trees in North America because its rapid growth made it popular in urban developments after World War II. Due to its abundance and its potential for disrupting pavements or plumbing, some cities are considering reducing the stock by using it as a source of biofuel.  

The  Ojibwe and Cherokee  created a cold infusion of the bark to help with cramps, dysentery, and hives. As a tea it was given to treat measles. The inner bark was also boiled and diluted with water as a soothing wash for sore eyes.

Like the Sugar Maple, many  First Nation people  also collected the sap of the Silver Maple for use as a sweetener.

This fast growing tree is a common source of cheap lumber that is commonly used for a variety of carpentry projects, from baskets to buildings. The bark infusion can also be mixed with parts of the white oak tree to make a rust remover.

9

Black Walnut

Juglans nigra

While the nut of the Black Walnut tree is not the same as the English walnuts you generally find in the store, they are still within the same family. When in the husk, these nuts are considered the fruit of the tree. In order to access the nut, you first remove the green outer layer and expose the shell beneath.

The  Cherokee  used juice from the husk of the walnut externally as a treatment for ringworm. They also chewed the light brown bark to relieve the pain of toothache and as a poultice to reduce the pain of headaches. However many first nation tribes were careful when using the bark of the tree for medicinal purposes because of its poisonous properties.

The wood of the tree is highly prized because of its beautiful dark color, strength, and durability. Because the wood can be kiln dried and easily shaped, it is ideal for a variety of woodworking projects, gun stocks, coffins, and high end furniture. The dried walnut shells are also commonly ground into a fine dust used for cleaning and sanding.

The husk produces brown stain (due to oxidation) that can be used as a wood stain, but will also stain clothing and skin if proper protection isn’t used. When boiled the husks will provide a yellow dye for fabric.

10

Hawthorn

Crataegus

This tree is named after its fruit and thorns. It has deep red round fruits that grow in the fall, known as haws, and spiny thorns along its small branches. Its thorns make it a great barrier and it was commonly used along pastures or roadways to protect areas from animal or human trespassers. The Danish landscape architect  Jens Jensen , hired by Henry and Clara Ford, commonly used Hawthorn to border his prairie landscape design. This can be seen first hand in Jensen’s Meadow in the Environmental Study Area where the hawthorn trees create a border between the meadow and the surrounding forest.   

Many First Nation tribes, including  Ojibwe and Potowatomi , ate the haws for stomach upset and bladder problems.  It was also common to create infusions with the bark and twigs for health or pain relief.  The haws, flowers, and leaves of the hawthorn have all been found to have high levels of antioxidants.  They are also rich in vitamin B, vitamin C, and tannins (a chemical that helps with blood flow).

The haws have been used traditionally for wines and jellies in many parts of the world. When Honey Bees forage on hawthorn blossoms, the resulting honey tends to be darker and nuttier than its common clover counterpart. 

Hawthorn’s strong, rot resistant wood made it ideal for boat parts and fence posts.  The sharp thorns were also commonly used as fish hooks or sewing needles.

References and Credits

Acknowledgements:

The original medicinal tree trail was created in 2003 by Greg Norwood as an independent study under the direction of Dr. Daniel Moerman. The digital version of the tree trail was drafted by Kristin Davis as an independent study under Dorothy McLeer in spring 2021. She made slight modification to the number of featured trees, added images, and expanded the scope beyond medicinal uses. Peter Knoop kindly provided the GPS locations for the trees along the trail. The StoryMap was edited and completed by Courtney Wagner and Dr. Claudia Walters in June 2021.

References Cited:

Barnes, B. and Wagner, W., 2004. Michigan Trees, Revised and Updated. Ann Arbor: University of Michigan Press.

Burns, R. and Honkala, B., 1990. Silvics of North America. Washington: U.S. Dept. of Agriculture, Forest Service u.a.

Foster, S. and Duke, J., 1990. A field guide to medicinal plants. Boston: Houghton Mifflin.

Grieve, M., Leyel, C. and Marshall, M., 1982. A modern herbal. New York: Dover Publications.

Hamel, P. and Chiltoskey, M., 2002. Cherokee plants and their uses: A 400 year History. Cherokee: Cherokee Publications.

Hutchens, A., 1991. Indian herbalogy of North America. Boston: Shambhala.

Harford, R., 2008. Eatweeds Wild Food Foraging Guide to the Wild Edible Plants. [online] EATWEEDS. Available at: < https://www.eatweeds.co.uk /> [Accessed 25 May 2021].

Moerman, D., 2010. Native American ethnobotany. Portland, Or.: Timber Press.

Smith, H., 1933. Ethnobotany of the Forest Potawatomi Indians. Milwaukee: Board of Trustees.

Smith, H., 1932. Ethnobotany of the Ojibwe Indians. Milwaukee: Board of Trustees.

Waugh, F. W., 1916, Iroquois Foods and Food Preparation. Ottawa: Canada Department of Mines

Photo Credits:

Black Cherry

Eli Sagor, 2007. Black Cherry Bark. CC BY-NC-SA.  Source 

Dendroica cerulea (flickr), 2018. Black Cherry Blossoms. CC BY-NC-SA  Source 

Dendroica cerulea (flickr), 2013. Wild Black Cherry. CC BY-NC-SA  Source 

Frank van Brunschot, 2018. American Cherry Wood Dining Table and Chairs.CC BY-NC-SA  Source 

Eastern Hop-Hornbeam

Sammy Purnell, 2018. Eastern Hophornbeam. CC-BY-NC.  Source 

Carol Nelson, 2020. American Hophornbeam. CC-BY-NC  Source 

friendofnature2 (iNaturalist), 2020. American hophornbeam. CC-BY-NC  Source 

Leo Van Der Loo, 2007. Hop Hornbeam Bowl. CC BY-NC-SA  Source 

Dan Santana, 2020. Ironwood Longbow. CC BY-NC-SA.  Source 

Red Oak

ariana_rowe (iNaturalist), 2020. Northern Red Oak. CC-BY-NC  Source 

Couleur (pixabay), 2016. Acorns. CC BY-NC-SA.  Source 

Dendroica cerulea (flickr), 2013. Northern Red Oak. CC BY-NC-SA  Source 

James Wright, 2016. Reclaimed Red Oak Coffee Table.  Source 

Shagbark Hickory

rajpankaja (iNaturalist), 2020. Shagbark Hickory. CC-BY-NC  Source 

Dendroica cerulea (flickr), 2017. Shagbark Hickory. CC BY-NC-SA  Source 

Salem Barker, 2017. Shagbark Carving. CC BY-NC-SA.  Source 

Juila (flickr), 2011. Hickory Nut Brittle. CC BY-NC.  Source 

Basswood

Rachel Hoffman, 2020. Basswood. CC-BY-NC  Source 

Dendroica cerulea (flickr), 2017. American Basswood. CC BY-NC-SA  Source 

Fossfolks. 2017. Telecaster. CC BY-NC-SA.  Source 

Sugar Maple

friendofnature2 (iNaturalist), 2020. Sugar Maple. CC-BY-NC  Source 

Diapicard (pixabay), 2011. Maple Syrup Tree. CC BY-NC-SA.  Source 

Dendroica cerulea, 2014. Sugar Maple. CC BY-NC-SA  Source 

American Beech

John Boldt, 2020. American Beech. CC-BY-NC  Source 

Dendroica cerulea, 2017. American Beech. CC BY-NC-SA  Source 

Plant Image Library (flickr), 2017. Fagus grandifolia (American Beech). CC BY-SA.  Source 

Silver Maple

megan_barry24 (iNaturalist), 2020. Silver Maple. CC-BY-NC  Source 

F. D. Richards (flickr), 2013. Silver Maple. CC BY-SA.  Source 

Dendroica cerulea (flickr), 2018. Silver Maple flowers. CC BY-NC-SA  Source 

Dendroica cerulea (flickr), 2017. Silver Maple. CC BY-NC-SA  Source 

Black Walnut

Tom Potterfield (flickr), 2011. Juglans nigra (black walnut). CC BY-NC-SA.  Source 

allison032 (iNaturalist), 2020. Eastern Black Walnut. CC-BY-NC  Source 

Dendroica cerulea (flickr), 2014. Black Walnut. CC BY-NC-SA  Source 

Alexander Grabovetskiy, 2012. Black Walnut Hand Carved Headboard. CC BY-NC-SA  Source 

Hawthorn

Beth Lewis, 2019. Common Hawthorn. CC-BY-NC  Source 

Dendroica cerulea (flickr), 2014. Hawthorn A. CC BY-NC-SA  Source 

Dendroica cerulea (flickr), 2014. Hawthorn B. CC BY-NC-SA  Source 

Al Murray, 2016. Hawthorn Fish Hooks and Nettle Line. CC BY-NC-SA  Source