Most common in wetter tropical regions, but sometimes also growing in sub-tropical and semi-arid environments. A weed of roadsides, fields, pastures, grasslands, open woodlands, riverbanks, floodplains, coastal environs, disturbed sites and waste areas.
Flowering time:
Flowering occurs mainly from late summer through until late winter.
Origin/distribution, remarks:
Native to tropical regions of Mexico, Central, the West Indies, and South America, as well as being naturalized in tropical parts of Africa, Asia and Australia.
