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. (invasivespeciesinfo.gov)

Here are links to some useful information.
https://www.invasivespeciesinfo.gov/what-are-invasive-species
Garden in the Woods - Native Plant Trust
Mass Audubon

A few familiar candidates
Unknown
Oriental Bittersweet

Unknown-2
Japanese Knotweed

Unknown-2 2
Multifora Rose