Chromolaena odorata (Siam weed)

Abstract

This datasheet on Chromolaena odorata covers Identity, Overview, Distribution, Dispersal, Hosts/Species Affected, Diagnosis, Biology & Ecology, Environmental Requirements, Natural Enemies, Impacts, Uses, Prevention/Control, Further Information.

Global spatial distribution of Chromolaena odorata habitat under climate change: random forest modeling of one of the 100 worst invasive alien species

“…Chromolaena odorata is a perennial shrub in the Asteraceae family, indigenous to the tropical and subtropical regions of Central and South America, encompassing Mexico, the Caribbean, and Brazil 1 . C .…”

“…C . odorata is a herbaceous to woody plant and can grow up to 2 m in height 1 , 2 . It reproduces both vegetatively and sexually, with high fecundity and rapid germination 1 .…”

“…odorata is a herbaceous to woody plant and can grow up to 2 m in height 1 , 2 . It reproduces both vegetatively and sexually, with high fecundity and rapid germination 1 . C. odorata can grow in various types of soils, ranging from sand dunes to heavy clays, and the seeds can survive in the soil for up to 6 years 3 .…”

“…C. odorata can grow in various types of soils, ranging from sand dunes to heavy clays, and the seeds can survive in the soil for up to 6 years 3 . C. odorata can tolerate acidic to neutral soil and establishes well in disturbed areas, grassland, forest, and fallow areas 1 . Because it has both short- and long-distance dispersal and can spread quickly, C. odorata is considered one of the world’s most invasive weeds 2 , 4 .…”

“…C . odorata transmits pathogenic fungi 6 and acts as a host for insect pests such as Zonecerus variegatus 7 , whose nymphs feed on the foliage of native plants 1 , resulting in economic loss in invaded regions. C .…”