Cultivars
'Brevipetala'
This deciduous shrub grows to 4 m (12 ft) tall and wide with a spreading zigzag-shaped branches and broad ovate green foliage that turns golden yellow during autumn. From the mid-to late winter it produces clusters of fragrant long-lasting yellow flowers and the shrub is grown in parks and gardens along borders.  

It prefers a semi-shaded to full sun position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Boskoop'
This deciduous shrub grows to 5 m (15 ft) tall by 4 m (12 ft) wide with a spreading branches and green foliage that turns yellow during autumn. From late winter to early spring it produces clusters of sweetly fragrant long-lasting bright yellow flowers that are reddish at the base. 

It prefers a full sun to semi-shaded position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Coombe Brook'
This deciduous shrub grows to 5 m (15 ft) tall by 4 m (12 ft) wide with a spreading branches and large ovate green foliage that turns yellow during autumn. From the mid-to late winter it produces clusters of sweetly fragrant long-lasting yellow flowers that are reddish at the base.  

It prefers a semi-shaded to full sun position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Early Bright'
This deciduous shrub grows to 5 m (15 ft) tall by 4 m (12 ft) wide with a spreading branches and ovate green foliage that turns yellow during autumn. From the mid-winter it produces clusters of fragrant long-lasting bright yellow flowers.  

It prefers a semi-shaded to full sun position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Emily'
This slow growing deciduous shrub attains a height of 2 m (6 ft) tall by 1 m (3 ft) wide with spreading branches forming a rounded habit with broad ovate dull green foliage that turns yellow during autumn. From the mid-to late winter it produces clusters of sweetly fragrant slightly curled golden yellow flowers with a reddish tint and a brown calyx. 

It prefers a full sun to semi-shaded position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Goldcrest'
This deciduous shrub grows to 5 m (15 ft) tall by 4 m (12 ft) wide with a spreading branches and ovate green foliage that turns yellow during autumn. From the mid-winter it produces clusters of sweetly fragrant long-lasting large yellow flowers.  

It prefers a semi-shaded to full sun position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.

'Pallida'
This deciduous shrub grows to 5 m (15 ft) tall by 4 m (12 ft) wide with spreading branches that form a broad rounded crown with ovate, glossy green foliage that turns yellow during autumn. From the mid-winter it produces clusters of sweetly fragrant long-lasting sulphur-yellow flowers with a purplish red calyx. 

It prefers a semi-shaded to full sun position and grows in well-drained but moist sandy to clay loams with a pH 6-7.5 and grows in USDA zones 5-8.