Cultivars
'Alba'
This evergreen shrub grows to 3 m tall and wide forming a compact rounded habit with pale green foliage. From late spring to early winter it produces racemes of pure white flowers. This shrub tolerates the open sunny position and grows in most well-drained moderately fertile moist soils in USDA zones 9-11.

'Royal Cape'(TM)
This shrub has a more compact growth habit than the species with intense blue flowers that appear from late spring to autumn. It grows in a full sun to semi-shaded position and is tolerant of light frost and drought resistant once established.