Marginal pond plant
Water betony
Scrophularia auriculata
A clump-forming, hardy marginal perennial for pond edges and bog gardens, grown in permanently damp soil and flowering from early summer to early autumn.
PLANT PROFILE
About Water betony
Water betony (Scrophularia auriculata), also commonly called water figwort in many sources, is a clump-forming herbaceous perennial for pond margins and damp/boggy ground. Sources describe it as a waterside/marginal species best planted in permanently damp soil at the pond bank rather than placed into deep water. It is hardy and robust in UK conditions (RHS hardiness rating H7) and is recommended for bog gardens and wildlife gardens.
Mature height is reported variously: RHS gives about 50–100 cm while Plantlife gives approximately 40–80 cm; RHS reports a spread up to around 50–100 cm. The plant prefers full sun to partial shade and is deciduous, dying back over winter. RHS cultivation advice is to cut back old growth to ground level at the end of the season. Propagation and introduction are by seed or by division in spring or autumn.
Although it is a useful wetland margin species and is recommended for wildlife gardens, the supplied sources do not present it as a submerged oxygenator; it is treated as a marginal/emergent waterside plant. The species is native to the UK (GB & Ireland) and appears in wetland/pond-margin plant lists used in surveys. Typical maintenance notes from the sources are to cut back dead growth at season end, divide as needed to manage clumps, and to watch for common pests such as slugs, caterpillars and figwort weevils. The GOV.UK invasive-species guidance consulted in the supplied research does not list Scrophularia auriculata as a statutory invasive non-native plant on the England & Wales lists searched.
POND SUITABILITY