Cultivars
Alice'
The leaves on this plant are deeply lobed and are silver white in colour.

'Cirrus'
The plant forms a large spreading habit with leaves that are finely toothed or lobed and are silver green.

'Silver Dust'
This compact shrub and grows to 300 mm (1 ft) tall and has divided silvery foliage.  It produces a few flowers and the species but maintains a dense habit and is commonly planted along perennial borders or used in pots or tubs.  

'White Diamond'
The leaves on this plant are deeply lobed (oak-like) and are grey white in colour.