An invasive plant is ” an alien species (non-native) whose introduction does or is likely to cause economic or environmental harm or harm to human health.”
Highly invasive plants that are threats particularly to agricultural production and clog waterways are considered ‘noxious‘. These plants are highly regulated and are illegal to buy, sell, or grow.
Why are invasive and noxious plants a problem?
According to the United States Forest Service invasive and noxious weeds are a problem for …