
Spanish Needles
NameSpanish Needles
Scientific NameBidens pilosa
Common NamesSpanish Needles, Blackjack, Beggar's Ticks, Cobbler's Pegs, Hairy Beggarticks
Plant FamilyAsteraceae
Natural HabitatCosmopolitan weed, thriving in disturbed soils, agricultural fields, roadsides, gardens, and open woodlands in tropical and subtropical regions worldwide.
Parts Usedwhole_plant,leaf,flower
Medicinal Actionsanti-inflammatory,antimicrobial,antioxidant,diuretic,astringent
Traditional UsesTraditionally used for various ailments including inflammation, infections (skin, respiratory, urinary), wounds, and digestive issues. It is also employed as a diuretic and in some traditional systems for malaria, diabetes, and hypertension.
Active ConstituentsFlavonoids, Chalcones, Polyacetylenes, Phenylpropanoids, Terpenoids
Preparation Methodsinfusion,decoction,poultice,powder
Contraindications & WarningsGenerally considered safe, but pregnant women and individuals on anticoagulant medication should use with caution. Allergic reactions are possible in sensitive individuals, especially those with known allergies to the Asteraceae family.
Cultivation NotesEasily grown from seed, often considered a weed due to its prolific nature. It prefers full sun to partial shade and well-drained soil, tolerating a wide range of soil types and conditions.
Raritycommon
Description
Bidens pilosa is an annual herbaceous plant characterized by its opposite, pinnately compound leaves and small, daisy-like flowers with white ray florets and yellow disk florets. It produces distinctive barbed achenes that readily attach to clothing and animal fur for seed dispersal.




