This is an evergreen, succulent, mat-forming perennial plant which grows happily on old walls and on stony ground, never reaching much above 15 cm high. It has flat-topped heads of little star-shaped white flowers (6–9 mm across)which bloom from June to September. These flowers are smaller than those of English Stonecrop, while the leaves are shiny and green, sometimes with a tinge of red but are larger than those of English Stonecrop. This is not a native plant but considered to be a garden escape – often planted in rock gardens - and it belongs to the Crassulaceae family.
I first identified this plant in 1977 growing in Dalkey, Co Dublin and I photographed it in 2009 in Gibletstown, Co Wexford.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre