A prostrate, herbaceous perennial that forms a thick mat of grey green foliage dotted with simple, pure white, fragrant flowers held aloft throughout spring and summer.
This cool season alpine plant is good as a cover for spring bulbs, but also very good cascading over rockeries or hanging over dry walls. They also make a good edging to pathways.
But they don't like it too hot so ensure it has some shade during the day in warmer climates or it will go very straggly.