Agricultural Handbook Number 727. Cytisus scoparius is a deciduous Shrub growing to 2.4 m (7ft) by 1 m (3ft 3in) at a fast rate. Scotch broom … Scotch broom was also used for a variety of other purposes, such as flavoring beer with a bitter taste, making a diuretic from an infusion of the leaves, and tanning leather. Pests can live over the winter in the debris. Portuguese broom has paler yellow blossoms and silver seedpods that are densely covered with white hairs. The Woody Plant Seed Manual. The Nature Conservancy, Arlington, VA. Public and private landowners are not generally required to control infestations of Scotch broom that occur on their property in King County, Washington. Hoshovsky, M. 1986. For more information, . All species occur in similar habitats, but their appearances differ slightly. Broom scientifically known as Cytisus scoparius is a multi-stemmed, deciduous/evergreen shrub that grows 6 to 12 feet (2-4 m) tall. The weeping, arching stems of the Scotch Broom shrub are covered in delicate, fine leaves, which burst into a spectacular spring show of brilliant golden yellow blooms. Scopar’ius means “broomlike”. HIGHLY TOXIC, MAY BE FATAL IF EATEN! Scotch broom, Cytisus scoparius, also known as Scots broom, is an attractive but invasive plant. The one exception is on the WSDOT right-of-way of I-90 east of mile post 34 and on the WSDOT right-of-way of Highway 2 where it dips down into King County before crossing Stevens Pass, in order to reduce Scotch broom's spread to neighboring Kittitas and Chelan Counties.Scotch broo… Shop monrovia yellow allgold scotch broom flowering shrub in pot in the shrubs section of Lowes.com Scotch broom can be confused with French broom (Genista monspessulana), Portuguese broom (Cystisus striatus), and common gorse (Ulex europaeus). Plentiful across Europe, Scotch broom is a shrub that bears wonderful flushes of yellow blooms in Spring. For more information see Noxious Weed Lists and Laws. It is an aggressively invasive plant that will grow thickly rather quickly. Rake fallen leaves away from the plant in autumn. Flat, hairy seedpods are initially green, turning brown or black with maturity. Common gorse also has bright yellow flowers, but it is spiny and has small, hairy seedpods. Scotch broom flourishes in full sunlight in dry, sandy soils, but it can survive under a wide variety of soil conditions. The sweet broom is a shrub that flowers an intense and immediately recognizable yellow. Rockport, MA. Scotch broom invades dry hillsides, pastures, forest clearings, dry scrublands, dry riverbeds, and waterways. University of California Press, Berkeley, CA.Â. It is hardy to zone (UK) 5 and is not frost tender. Perennials. Scotch broom is notable for its showy yellow, pea-like flowers and its bunches of unusual, angular stems. In February 2010, the Oregon Department of Agriculture amended its noxious weed quarantine (OAR 603-52-1200) to include Cytisus scoparius and the rule "prohibits the growing or sale of Scotch broom in Oregon regardless of the variety or cultivar. native to central and southern Europe; hardy to zone 5, performs better from zone 6; Special Note: This species has demonstrated an invasive tendency in Connecticut, meaning it may escape from cultivation and naturalize in minimally managed areas. p. 466-467.Â, Zouhar, K. 2004. Brooms can get 3 to 10 feet tall with angled stems and small simple to trifoliate leaves. Several characteristics contribute to its success as an invasive plant: (1) although it loses its leaves during dry conditions, the photosynthetic tissue in its stems allows it to grow throughout the year; (2) its roots host nitrogen-fixing bacteria, which helps the plant to establish in nutrient-poor soils; and (3) it produces abundant seeds that remain viable in the soil for many years. Scotch broom is a bushy, drought-deciduous shrub that grows three to six feet tall. Later, it was used for erosion control along highway cuts and fills. Drought and salt tolerant rapidly growing shrub with rather broom-like appearance. It has compound leaves with three, egg-shaped leaflets 1/2-1 inch long, which are dark green above and pale and hairy below. It is a short-lived shrub but tends to reseed itself. Yellow Scotch broom Cytisus scoparius and path Scotch broom is a pretty, yellow wildflower similar to gorse. A legume, hairy along the margins, 2". 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