Cultivars
'Dr Ronald Gray'
This plant grows to 150mm (6in) tall and up to 350mm (14in) wide with glabrous bright green leaves and produces white flowers.

'Lawsoniana'
This dwarf shrub produces small pink flowers.

'Maura'
This upright shrub grows to 250mm (10in) tall with grey green leaves and profusely produces semi-double purple flowers.

'Plena' 
This plant grows to 150mm (6in) tall and up to 400mm (16in) and produces double magenta flowers. It is planted as a ground cover or in rockeries.

'Shining Light'
This shrub grows to 250mm (10in) tall with dark green leaves and profusely produces large white flowers.