Horehound – Herb of the Month

By Maryann Readal

Horehound leavesThe fuzzy, light gray, deeply-wrinkled leaves of horehound (Marrubium vulgare) offer a nice contrast to other colors and textures in the garden. I love that contrast around the base of the red roses in my garden. Horehound is a perennial herb that grows from one to two feet tall, and can spread in the garden. It prefers dry sandy soil and a sunny location, tolerates poor soil, and is hardy in USDA Zones 4‒8. It may be started from seed in the spring, although germination is slow and sometimes not reliable. Cuttings can be taken from a mature plant or the established plant can be divided. Its leaves have a very bitter taste. Horehound produces whorls of small white flowers at the top of the stalk in the second year. The flowers are very attractive to bees, which makes for a tasty honey. The barbed seeds attach to grazing animals and clothing, enabling their spread to other locations.

Horehound is in the mint family. It has the same square stem and prolific growth habit as other mints. It is native to southern Europe, central and western Asia, and North Africa. It has naturalized in North America, Australia, and New Zealand. Horehound will reseed itself naturally to the point that it has become invasive in some areas. It is considered invasive in parts of Australia and New Zealand.  

History

As is the case with so many other herbs, horehound has been used as a medicine since ancient times. Horehound was important in Israeli and Arabic medicinal folk traditions. The Hebrew word for bitter juice is marrub, which could be a possible origin of horehound’s botanical name. Some writers claim that it was one of the bitter herbs used during Passover, though other writers dispute this claim.

Claeys Horehound candyThe Egyptians and the Greeks used it to treat respiratory problems, while the Romans used horehound as an antidote to poisons. Columella, a 1st century Roman agricultural writer, stated that horehound was useful in treating worms in farm animals (Columella, 1941).

In the Middle Ages, horehound was thought to ward off evil spirits, and charms containing horehound were worn for protection (Small, 2006). Hildegard von Bingen, an 11th century mystic and healer, said in her book, Physica: “The horehound is warm and has enough juice, and it helps against various illnesses….And who is ill in the throat, boil horehound in water and strain boiled water through a cloth and add twice as much wine, and let it boil again in a bowl with some fat, and drinks it often, and he will be cured in the throat (von Bingen, 1998).” Later herbalists, such as Gerard (14th-15th century), Culpepper (17th century), and  Grieve (20th century), all recommended the use of horehound for respiratory ailments.

Indigenous tribes of North America use horehound as a medicine, treating mainly respiratory issues but also breast complaints, gynecological problems, and skin problems (Moerman, 1998).

In early England, horehound was not only used for its medicinal properties, but it was also used to brew a horehound ale (Botanical.com, 2021).

rock and rye alcohol beverage with horehoundAt the end of the 19th century, rock and rye liqueur–a combination of rock candy dissolved in rye whiskey and a touch of horehound and citrus—managed to survive Prohibition because it was marketed as a medicinal tonic; it was labeled as a cure for colds, congestion, and other illnesses. The liqueur could be purchased in pharmacies in the United States and was initially taxed at a lower rate owing to its “medicinal properties (Mayhew, 2021).”

Current Uses

Today, horehound ales and drinks are still being made, as well as candies and syrups, to alleviate cold symptoms. Horehound throat lozenges are easily found anywhere that cold remedies are sold.

Ricola throat dropsMarrubiin, a component of horehound, gives the herb its bitter taste. It is also thought to be responsible for its expectorant action and for increasing saliva and gastric juices, which stimulate the appetite. This explains its traditional use as a cough suppressant, expectorant, and bitter digestive tonic (Kaiser, 2015).

“The German Commission E approved horehound herb for loss of appetite and dyspepsia, such as bloating and flatulence” (American Botanical Council, 2021), and the USDA has given horehound GRAS (Generally Recognized  as Safe) status (USFDA, n.d.). However, there have not been any clinical trials to definitively prove the effectiveness of the traditional uses of horehound for respiratory and other ailments.

Horehound, Marrubium vulgare, is The Herb Society of America’s Herb of the Month for September. Visit the webpage for more information, recipes, and an attractive screen saver.

Photo Credits: 1) Horehound (Marrubium vulgare) leaves; 2) Horehound candy; 3) Rock and rye cocktail; 4) Ricola throat drops. All photos courtesy of the author.

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.

References

American Botanical Council.  2021. Herbal Medicine: Expanded Commission E Monographs. Accessed 8/3/21.

Barnes, Joanne, Linda A. Anderson, J. David Phillipson. 2007. Herbal medicines. Great Britain: Royal Pharmaceutical Society.

Botanical.com. 2021. Horehound. Accessed 8/3/21. http://www.botanical.com/botanical/mgmh/h/horwhi33.html

Columella, Lucius Junius Moderatus. 1941. On agriculture, with a recension of the text and an English translation by Harrison Boyd Ash. Cambridge, MA: Harvard University Press. Internet Archive.  Accessed 8/9/21. https://archive.org/details/onagriculturewit02coluuoft/page/n17/mode/2up.

Kaiser Permanente. 2015. Horehound. Accessed 8/12/21. https://wa.kaiserpermanente.org/kbase/topic.jhtml?docId=hn-2109003

Mayhew, Lance. 2021. Rock and rye whiskey. The Spruce Eats. Accessed 8/3/21. https://www.thespruceeats.com/how-to-make-rock-and-rye-whiskey-760286

Moerman, Daniel E. 1998. Native American ethnobotany. Portland, OR: Timber Press.

Siegelbaum, Rebbetzin Chana Bracha. 2018. Was horehound one of the bitter herbs of the Pesach Sedar? Women on the Land Blog. Accessed 8/3/21. https://rebbetzinchanabracha.blogspot.com/2018/03/was-horehound-one-of-bitter-herbs-for.html

Small, Ernest. 2006. Culinary herbs. Ottawa: National Research Council of Canada.

U.S. Food and Drug Administration. (n.d.) Accessed 8/14/21. https://www.fda.gov/food/food-additives-petitions/food-additive-status-list#ftnH

Von Bingen, Hildegard. 1998. Translated by Pricilla Throop. Physica: The complete translation of her classic work on health and healing. Google Books. Accessed 8/3/21. Hildegard von Bingen’s Physica: The Complete English Translation of Her … – Google Books


Maryann is the Secretary of The Herb Society of America and a Master Gardener. She is a member of The Society’sTexas Thyme Unit in Huntsville, TX. She gardens among the pines in the Piney Woods of East Texas.

Tamarind – Herb of the Month

By Maryann Readal

The tamarind tree (Tamarindus indica) is one of many tropical herbal trees. Its leaves, bark, wood, roots, and fruits have many uses. The tamarind tree Tamarindus indicais also an evergreen, long-lived landscape tree, reaching a height of 40 to 60 feet tall and a width of up to 25 feet wide. Its pinnate leaves close up at night. The branches droop to the ground, making it a graceful shade tree. A mature tree can produce up to 350-500 pounds of fruit each year. It is native to tropical Africa and is in the Fabaceae family. 

One of the earliest documented uses of tamarind was found in the Ganges Valley of India, where wood charcoal dating back to 1300 BCE was discovered. Tamarind was mentioned in ancient Indian scriptures as early as 1200 BCE. Arab physicians were reported to be the first to use the fruit pulp as medicine. It was the Arabs who named the tamarind, calling it “tamara hindi” or Indian date. It is thought that the Arabs were responsible for the spread of the tamarind through the Persian Gulf region and Egypt. There is documented use of tamarind in Egypt in 400 BCE. The tamarind was brought to the Americas by the Spanish in the 1600s. A tamarind tree was planted in Hawaii in 1797.

Tamarind-based drinksThe tamarind tree grows well in USDA Hardiness Zones 10-11 and therefore, is not commonly seen in the continental United States, except in southern Florida. It produces a showy light brown, bean-like fruit, which can be left on the tree for up to six months after maturing. The sweet-sour pulp that surrounds the seeds is rich in calcium, phosphorus, iron, thiamine, and riboflavin and is a good source of niacin. The pulp is widely used in Mexico to make thirst-quenching juice drinks and even beer. It is also very popular in fruit candies. The fruit is used in Indian cuisines in curries, chutneys, meat sauces, and in a pickle dish called tamarind fish. Southeast Asians combine the pulp with chiles and use it for marinating chicken and fish before grilling. They also use it to flavor sauces, soups, and noodle dishes. Chefs in the United States are beginning to experiment with the sweet-sour flavor of tamarind pulp. Did you know that tamarind is a major ingredient in Lea & Perrins® Worcestershire Sauce? Tamarind CandyThe fruit pods are long-lasting and can be found in some grocery stores, especially those serving Hispanic, Indian, and Southeast Asian populations. 

All parts of this ancient tree have been used in traditional medicines in Africa and Asia and have a long list of maladies that they have treated. According to Purdue’s Horticulture and Landscape Architecture Department (https://www.hort.purdue.edu/newcrop/morton/tamarind.html), “Tamarind preparations are universally recognized as refrigerants in fevers and as laxatives and carminatives.” The ground-up seeds have been used as a poultice for boils, while the boiled leaves and flowers were used as poultices for sprains and swollen joints. The bark is astringent, tonic, and a fever reducer. An infusion of the roots has been used to treat chest complaints and leprosy. It has also been used to treat sunstroke, Datura poisoning, and alcohol intoxication. According to WebMD®, there is not sufficient evidence to determine the effectiveness of tamarind to treat most of these illnesses. However, research has shown that eye drops containing tamarind seed extract do improve dry eye.

Throughout the tropical world, there are many legends and superstitions regarding the tamarind tree. Here are a few:

  • A Buddhist parable about tamarind seeds says that they are the symbol of faithfulness and forbearance. 
  • Some African tribes believe that the tree is sacred, and some Indians believe that one should not sleep under one because of the acid it “exhales” during the night.  
  • Some even believe that nothing will grow under a tamarind tree. However, Maude Grieve, in her 1931 book, A Modern Herbal, claimed that “some plants and bulbs bloomed luxuriantly under the tamarind trees in her garden in Bengal.”
  • The Burmese believe that the tree is the dwelling place of the rain god, and that the tree raises the temperature of the ground beneath it.
  • In Nyasaland, tamarind bark is soaked with corn and fed to livestock as a way of guaranteeing their return if they are lost or stolen.
  • In some Asian countries, it is believed that evil spirits inhabit the tamarind tree and building a house where it grows should be avoided.
  • In the Caribbean, old tamarind trees are believed to have spirits living in them.

The tamarind is an incredibly useful tree. The young leaves and shoots are eaten as a vegetable, and the flowers and leaves can be added to salads. The flowers are also important as a pollen source for bees. The leaves can be tamarind seed podsused as fodder for domestic animals and food for silkworms. The leaves are also used as garden mulch. 

The seeds are ground to make flour, or roasted and used as a coffee substitute or as an addition to coffee. The seeds are also processed to produce a natural pectin and food stabilizer. There are many more uses of the seeds that are too numerous to list. 

The oil produced from the tamarind is culinary grade oil and is also used in specialty varnishes, adhesives, dyeing, and tanning.

The wood of the tamarind is another example of exceptional usefulness as it is very hard and insect resistant. It makes great handles for tools and is prized for furniture and paneling. It is considered a valuable fuel source because it gives off intense heat. The branches of the tamarind are used as walking sticks. The bark contains tannins and is used in tanning hides and is also used to make twine.

Lea & Perrins Worcestershire SauceThe fruit pulp is useful as a dye fixative, or combined with sea water, it cleans silver, brass, and copper. In addition to all of these uses, school children in Africa use the seeds as learning aids in arithmetic lessons and as counters in traditional board games.

The next time you reach for a bottle of Worcestershire sauce, remember the ancient tamarind tree and its usefulness in the tropical parts of our world.

 

 

Photo Credits: 1) Tamarindus indica (JIRCAS); 2) Tamarind-based beverages; 3) Tamarind-based confections; 4) Tamarind seed pods; 5) Lea & Perrins® Worcestershire sauce (Photos 2 – 5, courtesy of the author).

References

Ebifa-Othieno, Esther, et al. “Knowledge, attitudes and practices in tamarind use and conservation in Eastern Uganda. Journal of Ethnobiology & Ethnomedicine. Vol. 13. Jan. 2017. Available from Ebscohost. Accessed 10/16/20. 

El-Siddiq, K., et al. Tamarind, Tamarindus indica. England, Southhampton Centre for Underutilized Crops, 2006. Available from Google Scholar. Accessed 10/18/20.

Grieve, Mrs. M. A Modern Herbal. Harcourt, Brace, & Company. 1931.

History of tamarind.  Available from https://www.world-foodhistory.com/2011/07/history-of-tamarind.html.  Accessed 10/16/20.

Missouri Botanical Garden. Plant Finder. Available at http://www.missouribotanicalgarden.org/plantfinder/plantfindersearch.aspx. Accessed 10/16/20.

Tamarind. Purdue University Horticulture and Landscape Department. Available from https://www.hort.purdue.edu/newcrop/morton/tamarind.html. Accessed 10/18/20.

Tamarind. WebMD.  Available from https://www.webmd.com/vitamins/ai/ingredientmono-819/tamarind. Accessed 10/18/20

Tamarind tree. Available from https://www.permaculturenews.org/2009/02/20/tamarind-tree/. Accessed 10/16/20.

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.


Maryann is the Secretary of The Herb Society of America and a Master Gardener. She is a member of The Society’s Texas Thyme Unit in Huntsville, TX. She gardens among the pines in the Piney Woods of East Texas.