Caltrop (Tribulus terrestris)
Close Up of Caltrop
Caltrop is declared a Class B (spread to be controlled) and Class C (not to be introduced to the Northern Territory) weed in accordance with the NT Weeds Management Act 2001.
- Caltrop Photo Identification Table (pdf 141Kb)
Caltrop tends to invade roadsides, recreational and agricultural areas along with other high use or disturbed areas. The seeds are well equipped for dispersal by attaching to animals, tyres and footwear. They are able to puncture bicycle tyres and cause discomfort to people and animals. Caltrop may also cause photosensitization and nitrate poisoning in livestock.
