What
is an Invasive plant?
Most
invasive plants are alien species - plants like Japanese Knotweed
that we've brought into our gardens back in the 19th century as
an ornamental plant.
When
they escape, they can take over; for e.g., plants like Knotweed
are taking over river banks and smothering out all the little
grasses and herbs and vegetation, and by getting rid of the plants,
they're driving out the animals associated with them.
