Species that are considered high risk have a well-documented history of invasiveness in at least one location globally, and a high or medium climate match to the contiguous United States.
Mimosa pigra is a tall evergreen shrub that has become established in several countries outside of its native Central and South America regions. The history of invasiveness is classified as “high.” M. pigra causes major economic losses in Australia, where the government has battled the invader for years. This plant can take over wetlands and river banks, reducing water access, and the number of native plants. It has been shown to be a great detriment to pasture land in Australia, and cause significant economic loss. It also reduces the number of native birds and lizards by eliminating native habitat. The economic and social losses are fairly well documented. Climate match is high, especially in Florida where the species is already established. The certainty of assessment is high. The overall risk assessment category is high.
Publication date
Type of document
High Risk
Program
