- Commelina benghalensis, or tropical spiderwort, is an annual or perennial, creeping herb that is on the Federal Noxious Weed List.
- Leaves are alternate, lily-like, 1.2-2.8 in. (3-7 cm) long and often have reddish hairs towards the tip.
- Aboveground flowers are very small with relatively large lilac to blue petals and are present from the spring into the fall. Underground flowers, which grow on burrowing rhizomes, are white and very small.
- Fruits are ovoid capsules.
- Ecological Threat
- Commelina benghalensis invades areas with moist soil including roadsides, grasslands and other disturbed areas. It is especially problematic in pastures and crop fields where it forms dense, pure stands that can smother other plants such as low-growing crops. Commelina benghalensis is native to Asia and Africa and was first found in the United States in 1963.
Global Invasive Species Database. 2011. Invasive Species Specialist Group (ISSG) of the IUCN Species Survival Commission 
United States Department of Agriculture Animal and Plant Health Inspection Service 
Geosystems Research Institute Mississippi State University 
Invasive Plant Atlas of the MidSouth (IPAMS) 
Flora of North America, www.eFloras.org 
USDA NRCS PLANTS 
USDA ARS GRIN 
Images from Bugwood.org