Cultivars
'White Form'
This smaller shrub grows to 1m (3ft) tall and wide and produces white flowers that cover the plant from spring to early summer.

'Ruby Glow'
This shrub grows to 1m (3ft) tall and wide with a compact habit and produces deep red flowers during late spring.

Variation
var. B. microphylla
This prostrate shrub has very fine leaves and is used as a ground cover.