Species Detail - Canadian Waterweed (Elodea canadensis) - Species information displayed is based on the dataset "Discrete vascular plant surveys".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).
Live Map

Species image

Elodea canadensis
Canadian Waterweed
NHMSYS0000458325 RecommendedWell-formed
Invasive Species: Regulation S.I. 477/2011 (Ireland) || Invasive Species: High Risk Invasive Species (2013 Report) || Invasive Species: The Wildlife (Northern Ireland) Order 1985
elcan
Michx.
Flowering plant
Species
3
2
2
04/08/1983
25/05/2013
1 January (recorded in 2004)
15 December (recorded in 2021)
Collated by the National Biodiversity Data Centre from different sources, Discrete vascular plant surveys, National Biodiversity Data Centre, Ireland, Canadian Waterweed (Elodea canadensis), accessed 01 September 2025, <https://maps.biodiversityireland.ie/Dataset/190/Species/41362>

Records per month (across all datasets)

Records per year (across all datasets)