Invasive Plants

Identification of invasive species is the key to successful management and control.The following identification sheets have been produced by NNSS and are available for you to download for free. Just click on an image to open the ID sheets.

Once you are sure of your identification, please help us by submitting your record.

New Zealand Pigmyweed
New Zealand pigmyweed (Crassula helmsii)
Canadian Waterweed
Canadian Waterweed (Elodea canadensis)
Nuttall's Waterweed
Nuttall’s waterweed (Elodea canadensis)
Floating Pennywort
Floating Pennywort (Hydrocotyle ranunculoides)
Himalayan Balsam
Himalayan Balsam (Impatiens glandulifera)
Curly Waterweed
Curly Waterweed (Lagarosiphon major)
Parrots Feather
Parrots Feather (Myriophyllum aquaticum)
Water Fern
Water Fern (Azolla filiculoides)
Water Primrose
Water Primrose
American Skunk Cabbage
American skunk cabbage GBNNSS
Giant Hogweed (Heracleum Mantegazzianum)
Giant Hogweed (Heracleum mantegazzianum)
Hottentot Fig (Carpobrotus Edulis)
Hottentot Fig (Carpobrotus edulis)
Japanese Knotweed (Fallopia Japonica)
Japanese Knotweed (Fallopia japonica)
Carolina Watershield AKA Fanwort (Cabomba Caroliniana – Credit To RPS Grou PLC
Carolina Watershield AKA Fanwort (Cabomba caroliniana – credit to RPS grou PLC
Giant Rhubarb (Gunnera Species) – Credit To RPS Group PLC
Giant Rhubarb (Gunnera species) – credit to RPS group PLC