Sign up for the iWire to get breaking , events and the species spotlight.

Invaders of Texas Login

Forgotten password?

Photographer: Theodore Webster
Source: USDA Agricultural Research Service
Cover photo:

Tropical Spiderwort

Commelina benghalensis

Origin: Asia and Africa

Impact: Tropical spiderwort forms, dense, pure stands, smothering out other plants, especially low-growing crops. It has been reported recently as a problem in cotton in Alabama. In pastures, it grows rapidly over desirable grasses and legumes, competing with them for light and nutrients. In rice and other lowland crops it may be almost subaquatic withstanding flooding and waterlogged conditions, but they can also be found in cultivated lands, field borders, gardens, grasslands, roadsides, and waste places, and can become the dominant species in pastures.

Learn More: Species Profile.

Report Form

If you have spotted Commelina benghalensis (Tropical Spiderwort), use this report form to send an email to the appropriate authorities. All fields marked with an asterisk (*) are required.

Your Name*


Phone Number*

Street Address*



Zip Code*

Location of Observation*
Enter Latitude and Longitude in decimal degrees or Click the Choose Location button and navigate to the point where the specimen was observed on the Google Map to automatically enter Latitutde and Longitude.

Latitude: Longitude:

Did You Collect a Specimen?*
Yes or No.

Host Plant
If applicable, what is the host plant?

Comments: Describe the species, impact, infestation or generally what you are seeing.

Image Upload*
Please upload a photo of the specimen or the site where the specimen was seen. Image file must be a .jpg, .gif or .png format.