Blue mist shrub is aptly named as its gray-green foliage is shrouded in a cloud of blue from mid to late summer. It is a well-behaved garden plant that is very attractive to butterflies. 'Dark Knight' has deep purple blue flowers closely spaced on long stems.
A sport from 'Blue Hill', 'Schneehügel' or 'Snow Hill' is another breakthrough from renowned German plantsman Ernst Pagels. Beautiful spikes of soft white flowers are accented by fragrant, gray-green foliage. Compact habit and problem free.