The inner two sepals, the wings, are upright and white to yellow, sometimes pinkish or purple.

The keel petals are bright yellow, aging to brownish-red or purple.

[4] It has been given the Royal Horticultural Society's Award of Garden Merit.

[5] Several cultivars are also cultivated for garden use,[6] including 'Grandiflora', whose flowers are purple-red and yellow.

They may be propagated from softwood cuttings taken in early in the growing season.