Early Detection and Rapid Response Species

Early Detection and Rapid Response (EDRR) is an invasive species management strategy in which new invasive species are identified and removed before they can establish themselves and spread. EDRR depends on people being able to identify these new invasive species and tackling them quickly when identified. 

If you locate any of the EDRR species on your own property, please remove them promptly. If you locate any on Town-owned land, please email the Conservation Department, preferably with a screenshot of MapsOnline showing the location.

TheEDRR  species for our area are listed here, with links to Sudbury, Assabet, and Concord Watershed Cooperative Invasive Species Management Area (SuAsCo CISMA) act sheets on each species, including a description, impacts, and similar species. 

*Species of highest concern are noted with an asterisk

Common NameScientific Name
Amur Cork Tree
(Phellodendron amurense) *
Brazilian Waterweed
(Egeria densa)
Broad-leaved Pepperweed
(Lepidium latifolium)
Callery Pear
(Pyrus calleryana)
Creeping Buttercup
(Ranunculus repens)
European Alder
(Alnus glutinosa)
European Rusty Willow and Gray Willow
(Salix atrocinerea and Salix cinerea) *
Fig Buttercup
(Ficaria verna)
Giant Hogweed
(Heracleum mantegazzianum)
(Hydrilla verticillata)
Japanese Stiltgrass
(Microstegium vimineum) *
(Pueraria montana ssp. lobata) *
Mile-a-minute Vine
(Persicaria perfoliata) *
Narrow-leaf Bittercress
(Cardamine impatiens) *
Wall Lettuce
(Mycelis muralis)
(Rubus phoenicolasius)