Cultivars
'Citrina'
This perennial grows to 300 mm (1 ft) tall by 600 mm (2 ft) wide forming a low mounded habit with grey green foliage. From late spring to early summer it produces soft lemon-yellow saucer-shaped flowers in dense panicles above the foliage. 

It prefers an open sunny position and grows in most well-drained moderately fertile moist to dry stony soils. It is ideal for small rockeries or as a container plant, growing in USDA zones 3-9.

'Compacta'
This compact perennial grows to 300 mm (1 ft) tall by 600 mm (2 ft) wide forming a low mounded habit with grey green foliage. From late spring to early summer it produces golden-yellow saucer-shaped flowers in dense panicles above the foliage. 

It prefers an open sunny position and grows in most well-drained moderately fertile moist to dry stony soils. It is ideal for small rockeries or as a container plant, growing in USDA zones 3-9.

'Dudley Nevill Variegata'
This perennial grows to 300 mm (1 ft) tall by 600 mm (2 ft) wide forming a cascading- mounded habit with olive green leaves with irregular creamy margins. From late spring to early summer it produces primrose-apricot saucer-shaped flowers in dense panicles above the foliage. 

It prefers an open sunny position and grows in most well-drained moderately fertile moist to dry stony soils. It is ideal for small rockeries or as a container plant growing in USDA zones 4-9.