Tridax procumbens is commonly known as coat buttons or tridax daisy, is a species of Flowering plant in the daisy family. It is best known as a widespread weed and pest plant. It is native to the tropical Americas but it has been introduced to tropical, subtropical, and mild temperate regions worldwide. It is listed as a Noxious weed in the United States and has pest status in nine states. It is a very promising species that produces secondary metabolites reported to have a variety of medicinal uses including among others, anti-anemic, anti-inflammatory, anti-diabetic and anesthetic properties.

It is a creeping annual herb of open waste places, native of central tropical America, now widely occurring in the Tropics and present throughout the Region except in the drier parts.It is a weed of roadsides and cultivation. The rootstock is brittle making it troublesome to eradicate. The plant invades lawns (S. Leone, Nigeria, Kenya), and under mowing becomes perennial. It has great drought-resistance, outliving all grasses and most broad-leaved plants, a capacity due perhaps to dew-absorption by its leaf-surface hairs.The plant is used in Nigeria as a green feed for poultry. Cattle in Malaya graze it; the plant is recorded having a high potash content.

Tridax procumbens is an annual, sometimes perennial prostrate to ascending herb, the flowering axes reaching up to 50 cm tall.

It is covered with stiff, erect hairs.

The leaves, borne on stalks are simple, opposite, thick, egg-shaped, with deeply toothed margins, and covered in dense air.

Tridax procumbens has been in use in India for wound healing and as an anticoagulant, Antifungal, and Insect repellent. The juice extracted from the leaves is directly applied on wounds. Its leaf extracts were used for infectious skin diseases in folk medicines.