PlantTracker data from 2012 onwards

Distribution and abundance data on 16 high priority non-native, invasive plant species primarily from across the UK. These are largely riparian or aquatic species and comprise the following: Japanese Knotweed (Fallopia japonica) Himalayan Balsam (Impatiens glandulifera) Orange Balsam (Impatiens capensis) Water Fern (Azolla filiculoides) New Zealand (Pigmyweed Crassula helmsii) Parrot's Feather (Myriophyllum aquaticum) Giant Hogweed (Heracleum mantegazzianum) Floating Pennywort (Hydrocotyle ranunculoides) Creeping Water-primrose (Ludwigia peploides) Piri-piri burr (Acaena novae-zelandiae) American Skunk-cabbage (Lysichiton americanus) Rhododendron (Rhododendron ponticum) Monkey Flower (Mimulus guttatus, M. luteus & hybrids) Curly Waterweed (Lagarosiphon major) Gunnera spp (Gunnera spp) Pampas Grass (Cortaderia selloana)