Eriodictyon californica, known as Yerba Santa, is a plant species native to North America, such as California and Oregon. The Leaf of Yerba Santa is typically used for medicinal purposes.
- Yerba Santa tends to have an affinity to the lungs and is typically used for respiratory conditions, ranging from the common cold, asthma, tuberculosis, and chronic bronchitis.
- Yerba Santa is also used for inflammation of the airways of the lungs.
- California Yerba Santa leaf extract was used by Native Americans and early settlers as a remedy for cough, colds, grippe, and asthma [1,2].
- The leaves are an aromatic pleasant-tasting tonic herb that may reduce spasms, expel phlegm, and lower fevers[3, 4]. They have been especially recommended for treating diseases of the chest and respiratory system, including asthma, and are also used in the treatment of hay fever[5, 6, 3].
Suggested Use: 30 drops (1mL) in water or juice, 1-3 times daily, or as needed.
Yerba Santa History
Yerba Santa (Eriodictyon sp. Benth.)
By Forest Jay Gauna, Modoc National Forest
Yerba santa is Spanish for “holy weed” or “holy herb.” The three most commonly seen and used species are E. californicum, E. trichocalyx, and E. angustifolium, for northern, southwestern, and eastern California respectively. This genus belongs in the Hydrophyllaceae, or Waterleaf family: this family is known for its beautiful flowers (exempli gratia, baby blue-eyes and fivespot). With taxonomic changes, this family may soon be subsumed into the Boraginaceae, or Borage family, another family well known for colorful flower displays: forget-me-nots, bluebells, and Cryptantha belong to this family. Other species of this genus (E. altissimum and E. capitatum) are protected rare species.
Eriodictyon is a Greek compound word meaning “woolly net,” referring to the fuzzy underside of the leaves. The leaves are tough and leathery, simple, long (3 to 4 inches), and slender (lanceolate), often sticky with resin, with alternate arrangement along the stem. The flowers are white to lavender or purple, and shaped somewhat like little trumpets. The plant itself is about 3 to 4 feet tall. It has been recommended as a landscape plant in appropriate areas, especially in areas suffering from erosion; however, it is competitive and may invade more established gardens.
The Spanish name applied to this plant comes from its famous use as a potent medicinal herb in native California, and its use was quickly adopted. Today, herbal extracts of Yerba Santa can be found in herbal medicine stores. Native Californians used its leaves in the form of a tea, with which they treated respiratory sicknesses, colds, and stomachaches (as well as simply made a cup of tea). A hot, potent extract can be applied hot to a poison oak rash to quicken healing. A poultice of leaves may be applied to flesh wounds, sore muscles, above bone fractures, and where rheumatism strikes. It was also used as a smoke plant, which was said to help those with asthma. In addition to smoking, the leaves can be chewed upon for pleasure.
Apparently, bees who visit the flowers of this plant “make a deliciously spicy amber honey.
Source: "U.S. Department of Agriculture."
1. Munz, Philip A. 1973. A California flora and supplement. Berkeley, CA:
University of California Press. 1905 p. 
2. Sampson, Arthur W.; Jespersen, Beryl S. 1963. California range
brushlands and browse plants. Berkeley, CA: University of California,
Division of Agricultural Sciences, California Agricultural Experiment
Station, Extension Service. 162 p. 
3. Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
4. Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London 1996 ISBN 9-780751-303148
5. Food Plants International. http://foodplantsinternational.com/plants/
6. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5