It is native to the Mediterranean region.
Commonly known as crown vetch, Securigera varia (syn. Coronilla varia) is a perennial herb from the legume family. Native to the Mediterranean region, it was introduced and established in the United States between the 1950s and 1980s as ground cover and for soil erosion along roadways and in strip mining. It has been introduced and become established outside its native range in 14 other countries or islands including Europe, Australia, and New Zealand. Securigera varia is widespread throughout the US and Europe and can tolerate a diversity of climates. It's trailing stems can spread aggressively, reaching heights of one meter, and has been shown to crowd out native plant species. It primarily spreads vegetatively from small above ground stems with nodes and through rhizomes when provided with adequate moisture. Research has shown that seed viability is low, which indicates that vegetative reproduction is the primary form of reproduction. Due to its aggressive vegetative spread, it can be difficult to eradicate once it has established in an area. More research is needed to evaluate the seed germination timing and long-term seed viability. Also, there is lack of scientific evidence to suggest the plant's propagules spread by wind, water, or animals. However, considering its ability to spread aggressively from cut stems and rhizomes there is potential for it to be spread long distances by attaching to equipment and vehicles. Based on the results of this evaluation, Securigera varia received a total PRE score of 14, which puts it at moderate potential risk.