A biennial to perennial herb found in saltmarshes on soft, silty substrates, and in firmer areas of mud (and on sea-walls) near the high water mark of estuaries and tidal rivers. Unlike C. officinalis and C. danica, it is not found by roads. Lowland.
The distribution of C. anglica appears to be stable. Scottish records in the 1962 Atlas from north of the Forth-Clyde line have all been referred to the C. officinalis aggregate. Some plants from N.W. England appear to be intermediate between C. anglica and C. officinalis (Halliday, 1997).
Oceanic Temperate element.