Cultivars 
'Aureomarginata'
This herbaceous perennial grows to 700 mm (28 in) tall with broad dark green lance-shaped foliage forming a clumping habit. From spring to early summer it produces orange nodding bell-shaped flowers in clusters of 6-8 above the foliage on an upright dark green to brown scape up to 1 m (3 ft) tall, and is topped with a cluster of dark green leaf like bracts that have deep yellow margins. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 5-9.

'Aurora'
This herbaceous perennial grows to 750 mm (30 in) tall with dark green foliage forming a clumping habit. During spring it produces large orange-red nodding bell-shaped flowers above the foliage on an upright scape up to 1 m (3 ft) tall and is topped with a cluster of leaf like bracts. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 4-8.

'Lutea'   syn. 'Lutea Maxima'
This herbaceous perennial grows to 1m (3 ft) tall with dark green strap like foliage forming a clumping habit. During spring it produces large yellow nodding bell-shaped flowers above the foliage on an upright scape and is topped with a cluster of leaf like bracts. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 5-9.

'Prolifera'  Double Crown Imperial
This herbaceous perennial grows to 700 mm (28 in) tall with broad dark green lance-shaped foliage forming a clumping habit. From spring to early summer it produces a double crown of orange-red nodding bell-shaped flowers with purple veins in clusters of 6-8 above the foliage, on an upright purplish scape up to 1 m (3 ft) tall, and is topped with a cluster of mid-green leaf-like bracts. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 5-9.

'Rubra'
This herbaceous perennial has broad dark green lance-shaped foliage forming a clumping habit. From spring to early summer it produces deep red nodding bell-shaped flowers in clusters of 6-8 above the foliage on an upright dark green to brown scape up to 1 m (3 ft) tall, and is topped with a cluster of dark green leaf like bracts. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 5-9.

'The Premier'
This herbaceous perennial has broad dark green lance-shaped foliage forming a clumping habit. From spring to early summer it produces yellow-tinted orange nodding bell-shaped flowers in clusters of 6-8 above the foliage on an upright scape up to 1 m (3 ft) tall, and is topped with a cluster of dark green leaf like bracts. It grows in an open a sunny position in very well drained organic rich sandy to light clay soils in USDA zones 5-9.