Herbal Trees and Shrubs of the Plains and Prairies

By Katherine Schlosser

From place to place, season to season, and year to year,

the colorful mixtures and combinations of flowering herbs 

are influenced by permutations of weather, grazing,

competition with grasses, and seed abundance.

                                                    ~David S. Costello                        

Since childhood the words “For amber waves of grain, For purple mountain majesties, Above the fruited plain” colored my impression of the landscape of the western part of our country. Visits to grandparents, aunts and uncles, and masses of cousins didn’t disappoint my vision. It wasn’t until adulthood that I fully understood that those words were essentially a drone fly-over.  

For some of us, it takes paying attention not only to the larger landscape, but to the details as well to appreciate the enormous botanical diversity of our country. From the tallest coast redwood (Sequoia sempervirens) to the tiny littleleaf pyxie moss (Pyxidanthera brevifolia) and its 1/4-inch flowers peering out from 1/5-inch leaves, there is a lifetime of plants to observe and learn. Narrowing the focus to herbal plants, those with uses for flavoring and medicinal purposes, makes the task a little easier, but there is still a world of plants to learn.

Following are just a sample, and for further inspiration I recommend the sources listed in References:

Red false yucca (Hesperaloe parviflora)—though not a Yucca species—is a perfect summer blooming perennial plant that approaches shrub size at 3 – 5 feet tall and 4 – 6 feet wide. Arching evergreen leaves, with the appearance of a narrow Yucca leaf but softer, grow from a basal clump and have fine white curling filament hairs on the margins. In colder climates, the leaves will turn a purplish-red in winter.

Native to Texas and northern Mexico, red false yucca needs six hours of direct sunlight and good drainage. The plant is drought tolerant and can survive in urban settings but does not do well in damp soils. In temperate climates, it blooms only in the summer, and in warmer areas it can bloom year-round.

The leaves and fruits/seeds are toxic, but the flowers can be eaten: cut the flowers off the stem, leaving the base, stamen, and stigma in place to produce seed. Use only the flower petals in stir fry recipes (sautéing with onions, celery, carrots, squash, or other vegetables), in omelets, in salads or as a garnish. Add the petals toward the end of cooking.

This sweet bison calf, with her mother not far away, is enjoying the early fruits of the western serviceberry (Amelanchier alnifolia). It makes me wonder if that is how humans learned to eat the fruits—by watching wildlife. One taste would have told us YES, eat the fruits. They are luscious if you can get to them before the birds devour them. 

The western serviceberry is smaller than A. arborea (downy serviceberry) and others that grow in eastern states. Generally less than 20 feet tall, western serviceberry makes full, well-rounded shrubs with fruits easily within reach of bears, bison, deer, and other animals, as well as the expected birds. Pure white, star-like flowers appear in May, with dark purple fruits ripening by July. Habitat varies, but a certain amount of water is needed for good fruit set. They adapt to stream banks, moist hillsides, or open areas (as above), and grow from near sea level to sub-alpine areas.

The fruits were very important to Northwest tribes and were in such abundance that they could be dried and stored for winter use. Combined with leaves of wild bergamot (Monarda fistulosa) and field mint (Mentha arvensis), they were a major ingredient of pemmican. Dried fruits also flavored meat stews and sweet puddings. Now, we make jam, pies, and wine with them and add them to muffins and pancakes. Daniel Moerman (1996) devotes two full pages to the herbal and other uses of western serviceberry.

Western serviceberry grows in most states west of the Mississippi River, including Alaska.

Mountainspray, Holodiscus dumosos, is a stunning shrub that first caught my eye during a 1996 trip to the northwestern states. This reliable plant grows well across ID, WY, NV, UT, CO, AZ, and NM. It also blooms from June to August, making chances of finding them highly likely. 

This is a slender, deciduous shrub with oval, coarsely toothed, aromatic leaves and reddish stems. The flowers are slightly smaller (½” – ¾”) than its cousin, H. discolor (1 3/8” – 2 3/4”), which grows a bit further north. The shrub itself, though slender, can reach seven feet tall.

Mountainspray roots are brewed to make a pleasant tea, and the leaves are boiled to make a tea for treating flu. A beverage tea is also made from the bark. There are many other medicinal uses, enough for Moerman to fill a full page, along with toolmaking and hunting and fishing uses.

Mountainspray is enough of a beauty to put it on my “find one of these” list.

We don’t often think about our western states without thinking about “sagebrush.” Artemisia tridentata (named for the three lobes at the tip of the leaves) is the iconic big sagebrush of the West. It grows across most of the states we describe as “western.” Big sagebush is easy to identify with its aromatic, wedge- to fan-shaped leaves that are three-lobed at the tips and remain on the shrub through winter. Average height is 3 – 4 feet, but can range from as much as 15 feet in certain habitats – generally dryish, well-drained, neutral to slightly alkaline soils. They bloom with small yellow flowers in mid-fall.

Artemisia tridentata can develop a thick woody base, which was used for firewood in the absence of trees. Smoke from burning branches cleansed the air of impurities in ceremonies, and branches were tied together to make brooms.

Uses of the plant are many and mostly medicinal. However, the seeds were used to add a touch of bitter flavor to soups and stews and also made their way into liqueurs as a bittering agent.

Big sagebrush provides food and shelter for a broad range of animals and birds.

Wild tarragonI couldn’t end this post without mentioning another of the many Artemisia species: wild tarragon, a favorite of herb gardeners. This plant is recognized by the USDA Natural Resources Conservation Service as native to all states from the Rocky Mountains west to the Pacific coast. A few scattered populations also appear in Wisconsin and Illinois, and in one county each in New York and Massachusetts. There are some who suggest that our A. dracunculus can be traced to the garden variety, stating that it may have naturalized many years ago. Given its range and history of use by Native American tribes, I suspect it was here before colonists arrived.

Wild tarragon has been used to treat a great many health problems due to its anti-inflammatory, antiseptic, digestive, and antimicrobial properties; it was added to tobacco for flavor; branches were burned to sedate bees around their nests and to discourage mosquitos; as an insecticide; and to add a pleasant fragrance to baths and hair dressings.  

It is still a popular herb in the kitchen with an anise-like flavor that graces a multitude of dishes, salad dressings, and beverages. I have not tested the theory but am told that those growing on prairies and plains are not as strongly flavored as those available commercially.

It grows far better in the West than it does in my Mid-Atlantic garden, for in spite of droughts that seem to be happening more often, if my red clay holds moisture too long, the Artemisia dracunculus roots suffer. A friend up the road, however, has no difficulty keeping it as a perennial in her garden.

Regarding the information available to us about the Native American uses of various trees, shrubs, and plants, I am partial to the statement below:

Traditional Ecological Knowledge is the on-going accumulation of knowledge, practice and belief about relationships between living beings in a specific ecosystem that is acquired by indigenous people over hundreds or thousands of years through direct contact with the environment, handed down through generations, and used for life-sustaining ways (Newman, 2021).

I, too, have great respect for the knowledge and wisdom we have gained from the Indigenous Peoples of this land. That knowledge saved many from starvation and death and taught us much about this land.  

When you have the opportunity or need to add a tree or shrub, or replace one or more, consider some of our choices among native plants. Especially as we watch our climate change, there may be more choices for those of us in eastern states than we ever dreamed possible.

Photo Credits: 1 & 2) Hesperaloe parviflora (red false yucca), photos taken near Yuma, AZ; 3) Amelanchier alnifolia (Western serviceberry) enjoyed by as bison calf, photo taken in Idaho. 4) Amelanchier leaves and growing fruit (Sally & Andy Wasowski, Lady Bird Johnson Wildflower Center, www.wildflower.org); 5) Holodiscus dumosos (mountainspray); 6) Lochsa River along Lolo Pass, near Warm Springs Trailhead in Clearwater National Forest; 7) Artemisia tridentata (big sagebrush); 8) big sagebrush habitat in southern Idaho; 9) Artemisia dracunculus (wild tarragon). All photos courtesy of the author, except No. 4.

References

Brown, Lauren. (undated). The Audubon Society Nature Guides: Grasslands. Alfred A. Knopf, NY. 

Costello, David F. 1975. The Prairie World. Thomas Y. Crowell Company, New York.

Johnson, James R. PhD, and Gary E. Larson, PhD. 2007. Grassland Plants of South Dakota and the Northern Great Plains. South Dakota State University, Brookings, SD. 

Kershaw, Linda. 2000. Edible and Medicinal Plants of the Rockies. Lone Pine Publishing, Renton, WA.

Moul, Francis. 2006. The National Grasslands. University of Nebraska Press, Lincoln and London. 

Moerman, Daniel E. 1996. Native American Ethnobotany. Timber Press, Oregon.

Newman, R. 2021. Human Dimensions: Traditional Ecological Knowledge—Finding a Home in the Ecological Society of America. Bulletin of the Ecological Society of America, pre-publication, article e01892. https://doi.org/10.1002/bes2.1892. Accessed 06-18-2021. 

Williams, Dave. 2010. The Tallgrass Prairie Center Guide to Seed and Seedling Identification in the Upper Midwest. University of Iowa Press, Iowa City, IA.

Medicinal Disclaimer: It is the policy of The Herb Society of America, Inc. not to advise or recommend herbs for medicinal or health use. This information is intended for educational purposes only and should not be considered as a recommendation or an endorsement of any particular medical or health treatment. Please consult a health care provider before pursuing any herbal treatments.


Katherine Schlosser (Kathy) has been a member of the NC Unit of The Herb Society since 1991, serving in many capacities at the local and national level. She was awarded the Gertrude B. Foster Award for Excellence in Herbal Literature and the Helen de Conway Little Medal of Honor. She is an author, lecturer, and native herb conservation enthusiast eager to engage others in the study and protection of our native herbs.