Aubretia 'Whitewell Gem'

[ height 6 in., deep purple flowers in spring, sun to part shade, carpet former]

ROCKCRESS Excellent long blooming foreground plant that is useful between rocks and trailing over walls and edges. Grows well in light loam, preferring rough limy soil. The small leaves are a gray green, soft, profuse and evergreen. Leaves are smaller and more compact than the related Arabis.