'Astolat' was once a popular cultivar of Aubretia but seems to have become scarce. It's a super little plant, brightly variegated, quite dwarf and with lots of lilac-mauve flowers. This is one of relatively few Aubretia that you can safely plant near choice, slower-growing alpines without fear of it taking over, even in troughs or containers.
It's a bright plant for most of the year with colourful spring flowers and almost evergreen, silver-variegated foliage. Forms a low mound about 7cm (3") high by perhaps 15 to 20cm (6" - 10") wide but can be sheared back after flowering to keep it really neat, if needed.