Ageratum conyzoides is an integral part of traditional medicine in many countries of world, particularly in tropical and subtropical regions. The extracts and metabolites of A. conyzoides have been used as a bacteriocide, antidysentric and antilithic (Borthakur and Baruah, 1987; Okunade, 2002) by traditional communities in India, South America and Africa. In Central Africa, Brazil and Congo it is used to cure pneumonia, wounds and burns (Ming, 1999). Its decoction is given to treat headache, fever and rheumatism (Kirtikar and Basu, 1984; Okunade, 2002). A  crude material from leaves of species possesses in vitro antibacterial activity against Staphylococcus aureus and is also used for wound healing (Durodola, 1977). In  Cameroon, aqueous extracts of the whole plant are known for their anti-diabetic properties (Tsabang et al., 2001).  

Insecticidal / bactericidal / antifungal value 

The oil obtained from its leaves and inflorescence has insect-repellent properties (Saxena et al., 1994; Nogueira et al., 2010). Traditional communities in Asia, South America and Africa use the aqueous extracts of the species as a bactericidal (Borthakur and Baruah, 1987; Ekundayo et al., 1988). Leaf volatile oils of A. conyzoides have been reported to kill the maize grain weevil, Sitophilus zeamais (Bouda et al., 2001). The weed has also been reported to have natural fungicidal potential (Pu et al., 1990; Gravena et al., 1993).

Ageratum conyzoides has been reported as a natural herbicide for weed control in paddy fields (Xuan et al., 2004). Application of A. conyzoides at 2 t/ha served as an effective herbicide in controlling paddy weeds such as Echinochloa crus-galli var. formosensis, Monochoria vaginalis var. plantaginea and Aeschynomene indica. Ramakrishna et al. (2006) reported that a mulch of A. conyzoides had good potential in checking the growth of weeds and enhancing crop yield.

Plant pacifies vitiated kapha, vata, hemorrhoids, anorexia, dyspepsia, kidney stones, cuts, wounds and ulcers and in conjunctivitis..

Extract of the flower did not renders. Any antineoplastic activity against ascetic form of Schwartz leukaemia.

Essential oil obtained from the plant shows antibacterial activity against vibrio. Cholerae,O-gawa, shigella , shigaci.

The essential oil of the plant exhibit antihelmeathic activity against taenia solium & pheretima pasthuma.

It also relieves pain, inflammation, reduces spasms, fever, kills bacteria, relaxes muscles, kills insects, heals wound, prevent ulces, cleanses blood, stops bleeding, stimulates digestion, reduces mucus, rheumatism, urinary  infections, pneumonia, dysentery, diabetis, tumor, flu, cough.

Diarrohoea - Infusion of whole plant is given as a tonic to cure diarrohoea.

Anal prolapse – Juice of herb is given

Skin disease – A hot poultice of the leaves and stem is applied over affected part,

Wounds – Leaf juice or leaf paste for application to fresh wound for immediate cure.

Epilepsy –  Squeeze the leaves with a pinch of common salt and extract the juice

put 2-3 drops of juice in both nostrils once only.

A decoction of fresh plant is used as hairwash, leaving hair soft, fragment & dandruff free

Tea made of flower head mixed with Ocinurm tenrifolium is used to treat cough & cold

Juice of flowerhead is used externally to treat scabies, whitest a paste of them is used to treat rheumatism.

A paste of leaf mix with Bideus pilosa, Drymaica cordata, Galinsoga parviflora and rhizome of Zingiber officinate is used to treat snake bite.

Paste of leaf is used as poultice to remove thorn from stem

Juice of fresh plant is also used in treating post parturn uterium haemorehage.

Dry plant is also used in treating post partum uterium haemosehage.

Dry plant is powered and used to cuts, sored, ruptures caused by leporasy.