Japanese Knotweed (F. japonica) is native to Japan, Korea, Taiwan and China, is now widespread in continental Europe and Britain. Knotweed is suited to a wide range of conditions, including […]

Rhododendron (Rhododendron ponticum) is native to both Europe and Asia and was first introduced to parks, gardens, and demesnes in Britain and Ireland in the 1700’s. Rhododendron ponticum is readily […]

Himalayan Balsam (Impatiens glandulifera) is native to the western Himalayas but is now invasive in many parts of continental Europe. It can form dense monospecific stands where individual plants can […]

Giant hogweed (Heracleum mantegazzianum) can colonise waste land and river banks (riparian zones) and can produce a dense colony growing up to 5m high as well as producing 30 to […]

Giant rhubarb (Gunnera tinctoria), sometimes referred to as Chilean rhubarb, can be found around coastal cliffs, waterways, roadsides, wet meadows and derelict gardens and fields. Gunnera tinctoria or giant rhubarb […]