Rhododendron ponticum: Hanes ei gyflwyno a’i ymlediad yng Nghymru, y bygythiad i fioamrywiaeth a’r dyfodol (The invasive plant Rhododendron ponticum L.: Its introduction and establishment in Wales, the threat to biodiversity and the future)

Rhododendron ponticum L. is an evergreen, woody shrub, belonging to the Ericaceae family. Native to parts of Spain, the Caucasus Mountains and the Black Sea coast, it was introduced to Britain in the eighteenth century. It has since developed into one of Britain’s most problematic invasive species, causing ecological and economic damage. This article discusses the history of R. ponticumin Wales, considering the environmental and social factors which have contributed towards its success here. The current situation in Wales is explained, including the damage it causes and the efforts undertaken to manage its spread. To conclude, the paper will evaluate how future environmental challenges will affect R. ponticum’s spread in Wales.