Click on the species to bring up it’s own Identification guide.

The following resources are available courtesy of the GB Non-native Species Secretariat


Japanese knotweed

Fallopia japonica

Giant Hogweed

Heracleum mantegazzianum

Himalayan Balsam

Impatiens glandulifera

New Zealand Pygmyweed

Crassula helmsii

Parrot's Feather

Myriophyllum aquaticum

Water Fern

Azolla filiculoides

Floating Pennywort

Hydrocotyle ranunculoides

American Skunk Cabbage

Lysichiton americanus

Curly Waterweed

Lagarosiphon major


American Mink

Neovison vison

Asian Hornet

Vespa velutina

Chinese Mitten Crab

Eriocheir sinensis

Red-eared Terrapin

Trachemys scripta

Killer Shrimp

Dikerogammarus villosus

Signal Crayfish

Pacifastacus leniusculus