Cultivars
'Abbotswood'
This plant produces white flowers and bluish-green foliage.

'Beesii'
This compact slow growing plant produces golden yellow flowers to 20mm (¾in) across and silvery pubescent covered foliage. 

'Coronation Triumph'
This plant produces bright yellow flowers.

'Daydawn'
This plant grows to 1.2m (4ft) across and produces white creamy yellow flowers that are flushed in orange-pink.

'Elizabeth'
This plant produces large yellow flowers up to 45mm (1(¾in) wide.

'Farr's White'
This plant produces profuse white flowers up to 25mm (1in) wide.

'Friedrichsenii'
This vigorous plant produces pale yellow flowers up to 30mm (1¼in) wide and has grey-green foliage.

'Gold Drop'
This plant produces golden yellow flowers up to 25mm (1in) wide. 

'Goldfinger'
This plant produces rich yellow flowers up to 50mm (2in) wide.

'Jackman's Variety'
This plant produces bright yellow flowers up to 40mm (1½in) wide.

'Katherine Dykes'
This plant produces profuse canary-yellow flowers.

'Klondike'
This plant produces bright yellow flowers and bright green foliage.

'Longacre'
This spreading plant produces bright yellow flowers up to 40mm (1½in) wide and grows to 60cm (2ft) tall.

'Maanelys' syn. 'Moonlight'
This plant produces soft yellow flowers up to 30mm (1¼in) wide.

'Beauty'
This plant produces primrose yellow flowers up to 40mm (1½in) wide and grey-green foliage.

'Princess'
This plant produces pale pink flowers up to 25mm (1in) wide that fade to white in full sun.

'Red Ace'
This plant produces bright vermilion flowers with yellowish ting on the back of the petals and fades in full sun.

'Royal Flush'
This plant grows to 45cm (81in) tall and 75cm (30in) wide and produces rich pink flowers with a yellow centre that fade to white in full sun.

'Snow Bird'
This plant produces double white flowers.

'Sunset'
This plant grows to 1m (3ft) wide and produces dark orange flowers up to 30mm (1¼in) wide that fade in full sun.

'Tangerine'
This plant grows to 1m (3ft) wide and produces yellow flowers up to 30mm (1¼in) wide with the petals flushed in pale orange-red.

'Tilford Cream'
This spreading dense plant grows to 60cm (2ft) tall and 1m (3ft) wide and produces creamy-white flowers up to 35mm (1½in) wide.

'Yellow Gem'
This spreading plant grows to 60cm (2ft) tall and 1.2m (4ft) wide and produces bright yellow flowers and grey foliage.