Willowherb
Willowherb (Za Cao)
Botanical Name: Epilobium augustifolium, Chamaenerion augustifolium, E. brachycarpum, E. palustre
Willowherb (also called willow herb) is not to be confused with willow tree (also called willow white). Willowherb is a lovely plant known mostly for being nutritious and edible. It is often used with the herb saw palmetto to treat prostate problems. The juice of the flowers is highly antiseptic and can be squeezed from the fresh petals.
Watch a short video, from Ann Christensen, Founder and Creator of White Rabbit Institute of Healing™ – Willowherb East and West.
Below is an overview of willowherb, combining the best of Western Science, Oriental Medicine, Traditional Chinese Medicine (TCM), Shamanism, Folklore, and a wide range of healing modalities. Gain a balanced and thorough understanding of the healing properties of willowherb.
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Western
Name: Willowherb
Also Known As: Willow Herb, Fireweed, Rosebay Willowherb, Spike-primrose, Boisduvalias, French Willow, Blood Vine, Wickup, Tame Withy, Blooming Sally
Organs/Systems: Respiratory, Skin, Bladder, Prostate
Key Actions: Demulcent, Tonic, Astringent, Antispasmodic, Mucilaginous, Anti-inflammatory
Key Medicinal Uses: Colds and flu, coughs, wheezing, asthma, lung infections, urinary tract infections, chronic diarrhea, prostate issues, oozing skin conditions, and mouth infections.
Eastern
Pin Yin: Za Cao
Also Known As: N/A
Meridians: Lung, Kidney
Key Actions: Clears Heat, Resolves Phlegm, Seeds used to Tonify Kidney Qi and Yang
Key Medicinal Uses: Colds and flu, asthma, coughs, impotence.
Basic Habitat / Botany:
A genus in the Onagraceae family, containing about 160-200 different species of flowering plants. Willow is an herbaceous plant that can be either an annual or a perennial. A few are sub-shrubs. The leaves are mostly opposite or whorled, simple, and ovate to lanceolate in shape. The flowers are usually smallish and pink, but a few species are red, orange, or yellow. The fruit is a slender, cylindrical capsule containing many seeds, embedded in fine, soft, silky fluff, dispersed by wind. It blooms for only a month.
Willowherb is native to North America and Europe, with nine species native to Great Britain. Found in subarctic, temperate, and sub-Antarctic regions, willowherb is quick to carpet large swathes of ground and may dominate an ecosystem. Most will not tolerate shade trees and prefer recently disturbed patches, yielding to other plants over time.
Parts Most Frequently Used: Leaf, Root, Young Shoot, Seed
Flavors/Temps: Bitter, Astringent
Caution: Considered safe, used as directed. Infusions of leaves can be too bitter for some, causing stomach disorders.
Key Constituents: Rich source of Tannins and Vitamins A and C. Mucilage, Bioflavonoids, Pectin, Potassium, Fiber, Phosphorus
History/Folklore: Willowherb is often considered a weed in the garden. In WWII, it rapidly colonized derelict bomb sites during the many bombings of London. In America, it springs up on ground recently cleared by fire, lending it the name “fireweed.” It has also been known to colonize sites disturbed by oil spills and is often used to re-establish vegetation in these areas.
The young leaves, roots, and shoots are edible, with the shoots being eaten like you would eat asparagus. The dried leaves make a good tea. In Russia, it is used as a tea substitute. The soft inner part of the stem can be removed and used as a thickener in soups or stews, and the flowers are edible. The juice of the flowers is highly antiseptic and can be squeezed from the fresh petals, and an extract made from the leaves is used in ointments to soothe burns, sores, swellings, and boils.
As fodder, it is popular with goats and cows, and sheep will eat it too. In Finland, it is believed to increase the milk production of cattle
The down of the seeds has been mixed with cotton or fur in the manufacturing of stockings.
Native American Indians prepared a tea from the root to use as an enema to treat infant constipation, and peelings off the stems were dried and used to make strong cords for fishing.
Willowherb is useful for treating stress, feeling burned out, and washing away an old way of life.
In China, in addition to the leaves and flowers, the seeds are specifically used for treating impotence associated with Kidney Qi and Yang Deficiency.
The genus Epilobium derives from the Greek words “epi”, meaning upon, and “lobos,” meaning a pod, because the flowers stand upon the top of a long, thin, pod-like seed-vessel.
Willowherb can be grown in flower pots or hung and dried to help clean your home’s inside environment from air pollutants and unwanted bacteria.
Willowherb spreads by rhizome and root growth, but its seeds are its most effective method for spreading. In summer and autumn, the plant produces large amounts of seeds that spread on the slightest breeze, helping the plant to colonize new areas of bare soil easily. Despite being invasive, especially in roadside or disturbed environments, it is a valuable plant for pollinators and provides pollen to insects.
Willowherb symbolizes connection to the earth and the cycles of life. Its ability to crowd out native species is also a metaphor for resilience and determination.

Fireweed, a sweetener?
Willowherb (also called Fireweed) is used as a sweetener in Northwestern North America, where it is put in candy, jellies, ice cream, and syrups.

A Rich, Spicy Honey
In late summer, willowherb’s flowers yield pollen and copious nectar, which makes a rich, spicy honey.

An Anti-Inflammatory
Native American Indians applied the sap from the stem to wounds for the plant’s anti-inflammatory properties.
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