Cytisus nigricans, the black broom, is a species of flowering plant in the subfamily Faboideae of the family Fabaceae. Growing tall, it is a slender deciduous shrub with erect branches. Masses of brilliant yellow, slightly fragrant pea-like flowers appear in long racemes on the current year's growth in summer and early autumn.
The more compact cultivar 'Cyni', to , has gained the Royal Horticultural Society's Award of Garden Merit. It is hardy but prefers a sheltered position in full sun, with poor soil. It is preferable to remove the mature seed pods in autumn.