Achillea millefolium
What's the taxonomical classification of Achillea millefolium?
Achillea millefolium belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, it falls under the order Asterales. The plant is a member of the family Asteraceae and is specifically categorized under the genus Achillea, with its unique species designation being millefolium.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Achillea |
| Species | millefolium |
What are the morphological characteristics of this plant?
Achillea millefolium has finely dissected, bipinnate to tripinnate leaves that measure several centimeters in length and possess a feathery, fern-like texture. These leaves are arranged alternately along a creeping rhizomatous stem and typically exhibit a grayish-green color due to a dense covering of fine hairs. The plant produces terminal corymbs consisting of numerous small, white or pinkish flower heads held atop slender, upright stalks. Each individual flower head contains several disc florets surrounded by a ring of petal-like ray florets. The overall structure is characterized by a low-growing, spreading habit that allows the foliage to form dense mats across the soil surface.
What is the geographical distribution of this plant?
This plant is native to the temperate regions of the Northern Hemisphere, spanning across much of Europe, Asia, and North America. It thrives in a vast range of habitats including meadows, pastures, roadsides, and disturbed soils. Due to its adaptability, it has been widely introduced to other continents such as Australia and South America. The species can tolerate various climates, from subarctic environments to more temperate zones. Its ability to colonize diverse landscapes has made it a globally widespread component of many ecosystems.
How is this plant cultivated?
This plant, commonly known as yarrow, thrives in well-drained soil under full sun exposure and requires minimal irrigation once its root system is established.
It is a hardy perennial that can be propagated through division or by collecting seeds in late summer. While it tolerates various soil types, it performs best in sandy or loamy ground that does not remain waterlogged. Growers should allow the plant to dry out between watering sessions to prevent root rot.
Deadheading the flowers throughout the growing season will encourage continuous blooms and a more compact growth habit.
What parts of this plant are used medicinally?
This plant, known as yarrow, provides medicinal benefits through its flowers, leaves, roots, stems, and the whole plant. The dried flowering tops are commonly used to treat inflammation and promote wound healing. Finely chopped leaves are often applied topically to stop bleeding or brewed into teas to aid digestion. While the roots and stems contain various chemical compounds, they are less frequently utilized in traditional herbalism than the aerial portions. Consequently, practitioners often prepare remedies using the whole plant to capture a complete spectrum of its therapeutic properties.
According to a study published by "Plant physiology and biochemistry : PPB", Achillea millefolium is a medicinal plant that biosynthesizes secondary metabolites including terpenes and phenylpropanoids. The study analyzed the expression of genes such as DXR, GPPS, PAL, CHS, and LIS in different developmental stages of leaves and flowers. In glandular trichomes, the genes DXR, LIS, PAL, and CHS are highly expressed, while GPPS is expressed ubiquitously. Analysis of essential oils showed that sesquiterpenes and monoterpene compounds were identified from 57 total compounds. Among these, the highest percentages were germacreneD at 11.5%, guaiol at 10.38%, spatulenol at 8.73%, and caryophyllene oxide at 7.48%.
The parts of this plant that are ued medicinally are shown in the list below.
- flowers
- leaf
- root
- stem
- whole plant
What traditional systems uses this plant?
This plant, commonly known as yarrow, has been utilized across diverse global cultures for centuries to treat wounds, inflammation, and digestive issues. In traditional European herbalism, its astringent properties made it a primary remedy for stopping bleeding and healing skin abrasions. Within Brazilian folk medicine, practitioners often employ the plant to address various ailments including menstrual irregularities and febrile conditions. Many indigenous traditions also integrated the herb into rituals to promote physical and spiritual cleansing. This widespread historical use reflects the plant's versatile therapeutic reputation in both ancient and modern folk practices.
According to a study published by "Memorias do Instituto Oswalds Cruz", Achillea millefolium was among 13 Brazilian medicinal plants screened for antimicrobial activity. The study investigated extracts from these plants against various bacteria and yeasts to evaluate their effectiveness. While some of the 13 plants showed antibacterial activity, Achillea millefolium was considered inactive. This research aimed to explain the ethnobotanycal use of the studied species for the treatment of various infectious diseases.
The hystorical systems that uses this plant are shown in the list below.
- Brazilian folk medicine
What are the pharmacological activities of Achillea millefolium?
This plant has diverse pharmacological activities including anti-inflammatory, anti-microbial, anti-oxidant, analgesic, and wound healing properties. Its chemical constituents work to reduce swelling and inhibit the growth of various pathogens. The presence of bioactive compounds also helps neutralize free radicals to prevent oxidative stress in cells. Additionally, the plant acts as a natural pain reliever and promotes the rapid regeneration of skin tissues. These combined effects make it a significant subject for both traditional medicine and modern therapeutic research.
According to a study published by "Veterinary research forum : an international quarterly journal", Achillea millefolium is a medicinal plant highly regarded for its antioxidant and anti-inflammatory properties. In a study involving adult male rats, Achillea millefolium inflorescence alcoholic extract was administered at a dose of 1.20 g kg-1 per day in 1 mL sterile distilled water orally for 48 days. This extract was tested against nicotine doses of 0.20 and 0.40 mg kg-1 per day administered in 0.50 mL sterile distilled water for 48 days. The co-administration of the extract helped restore parameters such as epididymal sperm count, motility, viability, and serum levels of FSH, LH, and testosterone to near normal levels. Furthermore, the extract helped mitigate increased testicular malondialdehyde, total nitrite levels, and the incidence of apoptosis and spermatozoa abnormality. These findings indicate that Achillea millefolium may partially be protective against nicotine-induced testicular toxicity.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflamatory
- anti-microbial
- anti-oxidant
- analgesic
- wound healing
What medicinal compounds this plant contains?
This plant contains a complex profile of medicinal compounds including the flavonoids apiogenin, luteolin, and rutin, along with the sesquiterpene azulene derivative chamazulene and the coumarin achillin. These specific phytochemicals contribute to the herb's diverse therapeutic applications, particularly its anti-inflammatory and antioxidant properties. The presence of luteolin and apiogenin often aids in reducing oxidative stress within biological systems. Additionally, chamazulene is highly valued for its ability to soothe skin irritation and provide calming effects. Together, these bioactive constituents work synergistically to support various aspects of human health.
According to a study published by "Heliyon", Achillea millefolium is a medicinal plant containing components such as Camphene, Limonene, and Apiigenin. These specific components show anti-inflammatory effects through mechanisms like cyclooxygenase inhibition and prostaglandin E2 inhibition. Furthermore, studies showed that 90 % of its essential oil consists of monoterpenes which can be mutually beneficial with extract components. The plant also serves as a source for antioxidant and anticancer activities. These properties allow it to be used for the treatment of spasmodic gastrointestinal ulcers, inflammation, wound healing, and cancers.
The primary medicinal compounds of this plant are shown in the list below.
- Apigenin
- Luteolin
- Rutin
- Achiillin
- Chamazulene
What health conditions is this plant used for?
This plant is used for treating bleeding, digestive diseases, inflammation, menstrual disorders, and wound healing. Its astringent properties make it particularly effective at stopping excessive bleeding and promoting rapid wound healing. When consumed as a tea, it helps soothe various digestive diseases and discomforts within the gastrointestinal tract. The herb also acts as an anti-inflammatory agent to reduce swelling and pain throughout the body. Additionally, it is frequently utilized in herbal medicine to regulate and alleviate painful menstrual disorders.
According to a study published by "International journal of biological macromolecules", Achillea millefolium L. (Yarrow) (Yaro) was used to develop innovative natural-based hydrogels. These dressings impregnated with Achillea millefolium L. extracts were designed for hemosstasis, infection control, and wound healing. The study evaluated the spongious (HPMC/AA/Cp)-Yaro dressings through swelling characteristics, In-vitro cytocompatibility, hemosatitc efficacy, and bactericidal potential. Furthermore, the In-vivo hemosatitc potential of the Achillea millefolium L. based dressings was assessed using a hemorrhaging liver rat model.
The main health conditions this plant is used for are shown in the list below.
- bleeding
- digestive problems
- inflammation
- menstrual disorders
- wound healing
What are the herbal preparations of this plant?
This plant is Achillea millefolium, which is prepared as an Achillea millefolii herbae extract, essential oil, ethanolic tincture, infusion, or decoction for medicinal use. The essential oil provides a highly concentrated form of the plant's volatile aromatic compounds. An ethanolic tincture uses alcohol to pull out active constituents, while an infusion involves steeping the leaves in hot water. For tougher parts of the plant, a decoction is made by boiling the material to ensure thorough extraction. These various preparations allow for different methods of administration depending on the desired therapeutic effect.
According to a study published by "Photochemistry and photobiology", Achillea millefolii herbae extract was used as a photosensitizer for the inactivation of gram-negative Pseudomonas aeruginosa and gram-positive Staphylococcus aureus bacteria. The extracts function as efficient generators of singlet oxygen with a quantum yield (γΔ) ranging from 0.40 to 0.64. In the APDT assays, bacteria were incubated with the extracts for 30 min before irradiation. Following irradiation and 24 h of incubation, exposure to 405 nm, 590 nm, and 660 nm light at an energy dose of 30 J/cm2 (irradiance - 100 mW/cm2, exposure time - 5 min) was tested. For P. aeruginosa, the most pronounced effect was observed with blue light with a >3 log10 reduction. For S. aureus, the effect was approximately equivalent for the indicated wavelengths and dose with a >4 log10 reduction.
The main herbal preparations of this plant are shown in the list below.
- Achillea millefolii herbae extract
- Essential oil
- Ethanolic tincture
- Infusion
- Decoction
What side effects this plant can have?
This plant can cause allergic contact dermatitis, digestive problems, hypotension, exfoliation of immature germ cells, and seminiferous tubule vacuolization. Some individuals may experience skin irritation or rashes when coming into direct contact with the foliage. Ingestion of the herb is linked to various digestive problems and a potential drop in blood pressure known as hypotension. Animal studies have also revealed significant reproductive risks, including the exfoliation of immature germ cells. Furthermore, the plant has been observed to cause seminiferous tubule vacuolization within the testes.
According to a study published by "Contact dermatitis", cases of allergic contact dermatitis related to Achillea millefolium L. have been described since 1899. While 10 sesquiterpene lactones and 3 polyines were previously identified, a reinvestigation revealed 5 unsaturated, unknown guaianolides of peroxide character. The main sesquiterpene lactone, alpha-peroxyachafolid, was identified as a strong sensitizer in guinea pig experiments, while minor sesquiterpene lactones also contribute marginally to sensitizing capacity. During a 5-year follow-up from 1985 to 1990, more than 50% of Compositae-sensitive patients reacted when tested with a short ether extract of Achillea millefolium L. No exacerbation of patch test sites by irradiation with UV light was ever observed.
The main side effects this plant can have are shown in the list below.
- allergic contact dermatitis
- digestive problems
- exfoliation of immature germ cells
- hypotension
- seminiferous tubule vacuolization
What herbs are paired with Achillea millefolium?
This plant pairs most effectively with peppermint, chamomile, lemon balm, and lavender to enhance its medicinal and aromatic properties.
When used in herbal teas, the bitter notes of yarrow are often softened by the sweetness of chamomile or the cooling sensation of peppermint. Adding lemon balm provides a citrusy lift that complements the plant's earthy undertones during infusion. For topical preparations, lavender can be blended with yarrow to create soothing salves for skin irritation.
These combinations are frequently utilized in traditional herbalism to balance flavor profiles and broaden therapeutic effects.