Invasiveness
The first group of Cynanchum louiseae was recorded to be in Ipswich, in Essex County, Massachusetts in 1854. In 1864, a plant collector recorded that it was "escaping from the botanical garden where it is a weed promising to be naturalized". Thus, Cynanchum louiseae escaped from a garden in the Cambridge area of Massachusetts and naturalized in the surrounding states and is still spreading today.
Read more about this topic: Cynanchum Louiseae