Erect, herbaceous annual, 30 to 80 cm tall; stems are covered with fine white hairs, leaves are opposite, pubescent with long petioles and include glandular trichomes. The inflorescence contain 30 to 50 pink flowers arranged as a corymb. The fruit is an achene with an aristate pappus and is easily dispersed by wind.

Antifungal and antibacterial (essential leaf oil); kills insects (plant); analgesic, anti-inflammatory, emetic, purgative, decoagulant, depurative, febrifuge, stimulant, vulnerary.

Ageratum conyzoides
PIER
Tropical Plant database

Ageratochromene (essential oil); stigmast-7-en-3-ol, quercetin, kaempferol and fumaric and caffeic acids (leaf)

Stops bleeding from cuts (leaf juice); as an antilithic (root), styptic (leaves),to treat cuts, wounds and bruises (plant juice); to treat scabies, rheumatism, coughs and colds (flower heads).

As pyrrolizidine alkaloids have been found in Ageratum, it can be presumed to be dangerous if taken internally in large doses. Do not use in pregnancy or with liver disease.

Chandel et al., Biodiversity in Medicinal and Aromatic Plants in India.