Devil's Needles
NameDevil's Needles
Scientific NameBidens pilosa
Common NamesDevil's Needles, Blackjack, Hairy Beggarticks, Spanish Needles, Cobbler's Pegs
Plant FamilyAsteraceae
Natural HabitatThis pantropical weed thrives in disturbed areas, agricultural fields, roadsides, gardens, and open woodlands across tropical and subtropical regions worldwide. It prefers moist, fertile soils but is highly adaptable to various conditions.
Parts Usedwhole_plant,leaf,flower
Medicinal Actionsanti-inflammatory,antimicrobial,antioxidant,diuretic,astringent
Traditional UsesTraditionally, Bidens pilosa has been used in various cultures for treating wounds, infections, and inflammation. It is also employed for conditions such as diabetes, malaria, and gastrointestinal issues, often consumed as a tea or applied topically for skin ailments.
Active ConstituentsFlavonoids, Polyacetylenes, Phenylpropanoids, Terpenoids, Essential oils
Preparation Methodsinfusion,decoction,poultice,powder
Contraindications & WarningsGenerally considered safe, but pregnant and breastfeeding women should consult a healthcare professional. May interact with anticoagulant or antidiabetic medications due to its potential blood-thinning and blood sugar-lowering effects. Allergic reactions are possible, especially for individuals sensitive to the Asteraceae family.
Cultivation NotesEasily grown from seed, Bidens pilosa is often considered a weed due to its vigorous growth and prolific seed production. It prefers full sun to partial shade and well-drained soil, tolerating a wide range of soil types and conditions. It can become invasive if not managed.
Raritycommon
Description
Bidens pilosa is an annual herbaceous plant, often considered a weed, characterized by its opposite, simple to pinnately compound leaves and small white flowers with yellow centers. It produces distinctive barbed achenes (seeds) that readily attach to clothing and animal fur for dispersal.
