A perennial herb, found both in and beside clear shallow streams and in ditches, ponds, canals and marshes. Although it grows in similar habitats to R. microphylla, it tends to be restricted to calcareous substrates. It is also cultivated, but not as often as R. x sterilis. Lowland.
Although R. nasturtium-aquaticum was mapped in Perring & Sell (1968), that map was too provisional for any assessment of subsequent change to be made. Some losses have occurred, but the species is probably still under-recorded in some areas.
Eurosiberian Southern-temperate element, but widely naturalised so that distribution is now Circumpolar Southern-temperate.
Light (Ellenberg): 7
Moisture (Ellenberg): 10
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 7
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.9
July Mean Temperature (Celsius): 15
Annual Precipitation (mm): 988
Height (cm): 30
Perennation - primary
Life Form - primary
Life Form - secondary
Comment on Life Form
Clonality - primary
Count of 10km squares in Great Britain: 1678
Count of 10km squares in Ireland: 581
Count of 10km squares in the Channel Isles: 4
Atlas text references
Atlas Supp (9a)
1988. Comparative Plant Ecology.
1952. Biological Flora of the British Isles. No. 36. Nasturtium officinale R. Br. (pp. 228-238), Nasturtium microphyllum Boenningh. ex Rchb. (pp. 239-245). Journal of Ecology. 40:228-245.
Jalas & Suominen (1994)
1997. Aquatic plants in Britain and Ireland.
1991. Crucifers of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 6.