Nuttall’s waterweed Elodea nuttallii
Photo: GBNNSS with thanks to British Waterways
- Appearance: Submerged, perennial freshwater plant, whorls of 3-4 leaves, branching stems up to 3 metres in length.
- Growth: Found in still or slow flowing water, vigorous growth forming dense mats, small fragments can regrow.
- Impact: Negative impact on aquatic ecosystems, outcompetes and displaces native plants, forms monocultures impacting on species diversity, dense growth can clog waterways and contribute to flooding.
- Pathway: Deliberate release or improper disposal of this pond plant into the wild.
- What to do if you see Nuttall’s waterweed for sale or other offences being committed: Make a report by following the guidance here.
- What to do if you see this plant in the wild: Record it with a photograph (where possible).