Invasive Species

We have been asked about invasive species here in Norton. There are plenty of them around!
An "invasive species" is a species that is:
1) non-native (or alien) to the ecosystem under consideration and,
2) whose introduction causes or is likely to cause economic or environmental harm or harm to human health. (

Here are links to some useful information.
Garden in the Woods - Native Plant Trust
Mass Audubon

A few familiar candidates
Oriental Bittersweet

Japanese Knotweed

Unknown-2 2
Multifora Rose