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Elodea nuttallii
Also called Nuttall's Waterweed, Esthwaite Water Weed, Nuttall's Water Weed, Nutall Waterweed, Nuttall's Waterweed/pondweed, Nuttall’s Pondweed, Western Waterweed, Nuttall's Waterweed
Western waterweed (Elodea nuttallii) is a submerged perennial aquatic plant native to North America, now widespread as an invasive weed in Europe and Japan. It grows fully underwater in lakes, rivers and shallow ponds and is sometimes sold as an aquarium plant.
Elodea nuttallii is a species of waterweed known by the common name western waterweed or Nuttall's waterweed. This is a perennial aquatic plant which is native to North America where it grows submersed in lakes, rivers, and other shallow water bodies. It is also found in Eurasia, where it is commonly weedy; it is not known as a weed species in its native range. It is sometimes used as an aquarium plant.
This species is native to temperate North America. It has been naturalised in Europe since 1939 and in Japan since the 1960s. The first European record of Elodea nuttallii was probably 1914 in England, though it had been identified wrongly as Hydrilla verticillata, with correct identification as Elodea nuttallii occurring in 1974. It seems to have been originally naturalised in Oxfordshire in 1966, but has now spread to most of England, and many parts of lowland Wales and lowland Scotland. The first record in Ireland was in Lough Neagh in 1984, and it has now spread widely in the country. It is an invasive species in Europe; it reached Belgium in 1939, the Netherlands in 1941, Germany in 1953, Denmark in 1974, Sweden in 1991 and Norway in 2006. It is now present in most of Northern Europe, in many parts displacing the invasive Elodea canadensis.
Text excerpted from the Wikipedia article Elodea nuttallii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
