Broom, a genus of plants, consisting of shrubs or small trees, with leaves in threes and yellow or purplish white flowers, belonging to the natural order leguminosce. The common broom, the spartium scoparium of Linnaeus, and the cytisus scoparius of Lamarck, is a bushy shrub, with smooth, angular, dark-green branches, and yellow, butterfly-shaped, axillary blossoms, and is common on sandy heaths in Great Britain. Bundles of its twigs make brooms for sweeping. Its roasted seeds are sometimes used as coffee. The fibres of its bark, separated by soaking, may be manufactured into matting and cordage. A decoction of its tops has been celebrated as a medicine for dropsy, but, though often efficacious as a diuretic, it is not certain in its operation. The spartium junceum, or Spanish broom, is a native of Spain, abundant in Valencia, and is supposed to be the plant which, according to Pliny, overspread whole mountains near New Carthage (Cartagena). Its twigs and bark are manufactured into carpets and various implements, and are articles of merchandise.

It is cultivated as an ornamental shrub in gardens.