Exotic Pest Reporting
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Black swallow-wort (Cynanchum louiseae) is an invasive plant. It is a native of Europe and was first detected in Massachussetts in 1864.
It is an invasive plant species in the northeastern United States, parts of the Midwest, southeastern Canada, and California. In the United States and Canada, Cynanchum louiseae is a threat to native species because it crowds out native species.
10/15/2019 - Report and remove black swallow-wort plant
06/12/2019 - Invasive swallow-warts difficult to irradicate
05/14/2019 - Locals try to curb black swallow wort's spread
05/14/2019 - What can be done about swallow-wort?
05/08/2019 - Noxious weeds continue to spread across Minnesota
09/07/2018 - Monarch caterpillar killer outbreak in Kingsley
08/30/2018 - Moth provides hope against invasive swallow-wort
04/30/2018 - New invasive plant plan fights monarch nemesis
10/18/2017 - Thanks to Marginal Way volunteers
08/09/2017 - Heroes of Wellesley's vernal pools