The invasive water hyacinth has taken over a communal pond in a small village in northern India. All other plants have been pushed out. Invasive species are reshaping ecosystems and local people’s ...

Get ready for another alien plant invasion. If you think that weeds like purple loosestrife, Japanese knotweed, garlic mustard, celandine and common reed are bad, get ready for a newcomer that will ...

Amelia Ruiz-Coogan explains why learning to tell the difference between weeds and wanted plants, and indigenous and alien species, matters, especially in threatened grassland areas.